In the Italian wine supply chain, the price of grapes is not always fixed at the time the contract is concluded. It may be deferred, parametric or linked to subsequent quality assessments. This article examines the legal framework governing grape price determination under Italian law, distinguishing between the sale of grapes to a third-party winery and cooperative conferment by members to a cooperative winery. In the former case, the price must be determined or determinable on the basis of prior, objective and verifiable criteria, in compliance with written contractual form and the rules on unfair trading practices under Legislative Decree No. 198/2021. In the latter, the value of the product may be settled ex post according to cooperative rules, mutualistic principles, corporate resolutions and equal treatment among member-contributors. The central argument is that price variability is physiological in the wine sector, but becomes legally pathological when the valuation method is left to the buyer’s or cooperative’s uncontrolled discretion. The article also analyses the civil-law remedies available to producers, showing that each remedy must be selected according to the specific defect affecting the relationship.
Table of Contenents
1. The Price of Grapes as a Value-Formation Process: Sale to the Winery and Cooperative Conferment
In contracts for the sale of grapes, as in cooperative conferment1, notwithstanding the different structure of the two relationships, the determination of the economic value to be recognised for the product is not exhausted by its monetary quantification. It is the outcome of a process in which the economic value is formed through the technical assessment of the grapes, their productive destination and the rules governing the relationship between the producer and the winery or cooperative. The legal issue, therefore, does not concern only the amount of the price, but the method by which the value of the product is formed, documented and rendered opposable to the parties.
The relationship between the grape grower and the winery rarely breaks down over the mere existence of an obligation to deliver or to take delivery of the product. Disputes arise, rather, at the stage at which the grapes are weighed, classified, assessed, possibly downgraded and finally settled. It is at this point that grape quality acquires legal relevance. It affects the price, the maturity and enforceability of the producer’s claim, the proper performance of the contractual obligations and, in the most problematic cases, the very stability of the contractual arrangement.
Grapes cannot be treated as a wholly fungible agricultural commodity. Their value depends on the quantity delivered or conferred, but also on qualitative and productive characteristics that affect their oenological destination, their compliance with product specifications and their actual potential for commercial valorisation. It follows that, in wine-sector relationships, the price does not necessarily have to be fixed as a definitive numerical amount at the time the contract is concluded. It may be deferred, parametric or linked to subsequent technical assessments, provided that the criterion by which the amount is to be determined has been defined in advance.
This rule has immediate operational significance. If the contract specifies the calculation criteria, the method for assessing quality, the relevant documentation and the economic effects of any non-conformities, the absence of a final amount does not, in itself, indicate a pathological feature of the relationship. In such a case, the price is not absent: it is entrusted to a process. Conversely, where the contract is limited to generic formulas — such as “market price”, “grape quality”, “winery assessment” or “final settlement” — without specifying their operative content, variability risks turning into a substantially discretionary power of the buyer.
The issue becomes even more sensitive in relationships structured before the harvest. In practice, the sale of grapes is not always confined to an instantaneous exchange between delivery of the product and payment of the price; it may be preceded by agronomic prescriptions, vineyard inspections, instructions on harvesting methods and requirements functional to the subsequent oenological destination2. In such cases, the buyer, while remaining a party to an exchange relationship, is not entirely external to the production phase. Precisely for this reason, any interference with production must be matched by a corresponding economic rule: if the winery directs or conditions the way in which the grapes are to be produced, harvested or delivered, the contract must clarify how those elements affect the determination of the price3.
Where the agreement is concluded before the harvest, the distinction between a product not yet in existence, grapes still on the vine and an already harvested product remains legally relevant4. The autonomy of the asset from the land, the moment of transfer, the allocation of risk and the characterisation of the parties’ obligations all depend on that distinction. The civil-law classification is not merely descriptive: it affects the proof of performance, liability for loss or deterioration of the product and the formulation of claims in the event of failure to take delivery or of a dispute over the price.
Cooperative conferment is different. The contributing member does not act as an external seller transferring the product to a third-party winery; he or she participates in a mutualistic organisation that collects, processes, transforms and markets the members’ products in their common interest5. For this reason, in the cooperative relationship it is more accurate to speak of settlement of the value of the conferred product, rather than of a price in the strict sense. The amount recognised to the member does not derive solely from an act of exchange, but from the functioning of the mutualistic relationship, according to the criteria laid down in the articles of association, the conferment regulations, the resolutions of the corporate bodies and the results of the cooperative’s activity.
Cooperative settlement may physiologically take place ex post, because it depends on the quality of the grapes conferred, the costs of processing, the performance of the cooperative’s activity and the overall result of the business. The fact that settlement occurs subsequently cannot, however, be confused with opacity. Even in the cooperative model, the member must be able to reconstruct the process by which his or her product was classified, valued, possibly downgraded or subjected to deductions. The organisational discretion of the cooperative is limited by procedural transparency, equal treatment among contributing members and the proper accounting representation of mutualistic relationships6.
The distinction between sale and cooperative conferment is also decisive as regards the applicable legal framework. The sale of grapes between economic operators falls within the scope of the rules governing contracts for the sale of agricultural and food products and unfair trading practices. The member’s conferment to the cooperative, by contrast, remains outside that framework and must be assessed through the rules specific to the corporate and mutualistic relationship. This exclusion does not create a gap in protection, but rather shifts the basis of legal scrutiny: in the case of sale, control is grounded in the contract and in the special rules governing the supply chain; in the cooperative, it is grounded in the articles of association, the internal regulations, the resolutions of the corporate bodies and the principles of proper mutualistic governance.
The patronage refund, or ristorno, must also be distinguished, at least from a technical-legal standpoint, from the settlement of the conferred product. In agricultural conferment cooperatives, and particularly in cooperative wineries, the distinction is not always immediately apparent in practice, because the attribution to the member of additional value at the end of the financial year may appear to be a mere supplement to the price of the grapes. It is therefore necessary to examine the model adopted by the cooperative. Where the conferment is assigned a base price and, at the end of the business cycle, a share of the mutualistic surplus is distributed among members in proportion to the quantity and quality of the products conferred, the ristorno performs the function of supplementing the value already recognised. Where, instead, the articles of association or the conferment regulations provide that the product is to be valued only at year-end, after the verification of revenues, costs and the performance of the business, the amounts paid to the member do not necessarily constitute a ristorno in the strict sense, but may represent advances, balances or adjustments of the final conferment value. To confuse settlement of the product, advances, balances, adjustments and ristorno is to superimpose legally distinct categories, with consequences for the content of the member’s claim, the moment at which it becomes enforceable, its accounting representation and the remedies available in the event of a dispute7.
The issue, therefore, is not whether grapes must always have a fixed price, nor whether a generalised judicial review of the economic convenience of the transaction should be introduced. The law does not replace the market. It does, however, require that a variable price should not turn into an arbitrary determination; that quality should not be invoked as a generic formula to reduce the price or settlement value; that any downgrading should be technically justified and supported by documentation; and that cooperative settlement should remain verifiable by the member.
2. Determinable Price, Valuation Method and Limits on the Winery’s Unilateral Power
In contracts for the sale of grapes, the absence of a numerical price at the time of conclusion of the contract does not, in itself, render the economic clause invalid. Subsequent determination is admissible where the contract contains a criterion capable of making the price ascertainable without requiring a further expression of will by the parties and without granting the winery a power of quantification that has not been previously delimited8.
The distinction between a price that has not yet been quantified and an indeterminate price therefore remains decisive. In the former case, the contract does not state the final amount, but contains the method for identifying it, by reference to objective parameters, technical data, price lists, quality categories or already regulated mechanisms for advances and balances. In the latter case, by contrast, the contractual arrangement is confined to formulas devoid of real determinative content, because it does not make it possible to identify the source of the parameter, the moment of its ascertainment, the method of verification or the resulting economic effect.
The difference is not merely a matter of drafting. A clause that allows the price to be determined through a calculation, a technical datum or an identifiable external parameter preserves its contractual function, even where the amount is fixed at a later stage. A clause that refers to an undelimited assessment by the buyer, by contrast, does not regulate the price; it shifts to the performance stage what should have been governed before delivery.
From a civil-law perspective, the inquiry must be conducted according to a conservative approach. The deficiency of the price clause does not automatically entail the invalidity of the entire relationship. It is first necessary to verify whether the price can be determined by objective means. These may include statutory criteria, trade usages, price lists, market values or other elements compatible with the arrangement intended by the parties. Article 1474 of the Italian Civil Code, in the field of sale, allows the price, in certain cases, to be derived from external parameters, such as the price normally charged by the seller or the price lists and official market price bulletins (mercuriali) relating to the place and time of delivery9. Only where such an operation is not possible, and the price remains devoid of any criterion of determination, does nullity for indeterminacy of the subject matter arise, pursuant to Article 1418(2) of the Italian Civil Code, read in conjunction with Article 1346 of the same Code10.
In the wine sector, however, recourse to statutory default criteria cannot become the ordinary remedy for contractual vagueness. The value of grapes depends on qualitative, territorial and documentary elements that are too specific to be entrusted to general formulas. For this reason, the economic clause must be constructed as a procedural clause: it is not sufficient to refer to the quality of the product or to market trends11; it is necessary to indicate which data affect quantification, according to which method they are to be ascertained, and how they affect the final price12.
This approach is confirmed by the rules governing contracts for the sale of agricultural and food products. Legislative Decree No. 198 of 8 November 2021 does not impose a fixed or immediately numerical price, but requires the price to be either stated or determinable on the basis of criteria laid down in the contract13. From this perspective, written form does not perform a merely evidentiary function. It operates, rather, as a form serving the determination of the essential content of the relationship, since the contract must make the essential elements of the transaction knowable before delivery, including the process by which the price is formed14.
In continuing or periodic relationships, this requirement may also be satisfied by means of a framework agreement, subsequently implemented through orders, transport documents, delivery notes, invoices or settlement statements. These documents, however, may supplement the performance of an arrangement already formed; they cannot create the valuation criterion ex post15. If the producer delivers the grapes without knowing the parameter that will be applied, the subsequent documentation risks recording a decision of the buyer, rather than the application of a rule previously agreed between the parties.
The moment at which the price becomes definitive also affects the enforceability of the claim. If the price is fixed at the time of delivery, the payment period runs from that moment. If, by contrast, the price is to be determined subsequently, the contract must make it possible to identify the act or event that closes the settlement process. This may consist of weighing, classification, the analytical report, communication of the settlement statement, publication of the applicable price list or approval of the final settlement. The absence of such a concluding moment generates uncertainty not only as to the quantum, but also as to the time of performance.
Particular attention must be paid to references to external parameters. Price lists, commodity exchanges, Chamber of Commerce schedules, average values, ISMEA data or other indices can make the price determinable only if the reference is precise. The external parameter is adequate where it makes it possible to identify the applicable value without any subsequent choice by the interested party. If, by contrast, the contract refers generically to the market, the campaign average or the value recognised by the winery, without specifying the source and method of calculation, the reference does not amount to determination per relationem, but leaves room for discretion.
The case of a parameter internal to the buyer’s organisation is even more delicate. The winery may use its own price lists, quality tables or classification criteria, but such elements must be knowable before delivery and applied consistently16. Their subsequent modification, especially where it affects price, quality, payment terms or classification methods, is no longer a mere interpretative issue; it may amount to a breach of the prohibition on unilateral amendments to contractual terms17.
A further distinction must then be drawn between reference to an objective parameter and determination entrusted to a third party. Article 1349 of the Italian Civil Code governs third-party determination, or arbitraggio, which arises where the parties entrust a person other than themselves with the task of determining the performance according to equitable assessment or, within the limits permitted, pure discretion18.
Determination per relationem is different: in that case, the contract refers to an external source that is already identified or identifiable. In the former case, judicial control concerns the manner in which the third party performs the task and, where necessary, judicial substitution; in the latter, it concerns the sufficient precision of the parameter referred to.
In wine-sector contracts, this distinction assumes particular relevance in the qualitative assessment of grapes. The verification carried out by a technician, a laboratory, an oenologist or the winery itself may constitute a technical assessment where it applies physico-chemical, documentary or product-specification parameters already provided for in the contract. It assumes a properly determinative function, by contrast, where it is based on an assessment not constrained by prior criteria, with the consequent need to scrutinise the power attributed to the assessor.
In cooperative conferment, the same requirement assumes a different form. The value of the conferred product may be settled ex post, because the cooperative must take into account processing costs, the performance of the business, commercial results and internal mutualistic rules. Here too, however, determinability coincides with the knowability of the process. The member must be able to identify the source of the criteria applied — the articles of association, conferment regulations, corporate resolution, settlement statement or classification in the delivery note — and verify whether those criteria have been applied consistently and without discrimination.
The scrutiny, therefore, does not concern the price as such, but the pathway through which it is formed. The court is not called upon to substitute its own economic assessment for that of the market, the winery or the cooperative. It must verify whether the value attributed to the grapes derives from a criterion that is prior, knowable, documented and correctly applied.
3. Grape Quality as a Pricing Criterion, Classification Fact and Limit on Refusal to Take Delivery
In wine-sector relationships, grape quality is not merely a technical parameter for assessing the product, but one of the criteria through which the economic balance of the exchange is constructed. It affects the value recognised to the producer, the commercial classification of the product, its oenological destination and, in the most serious cases, the buyer’s very ability to refuse to take delivery. For this reason, it is not sufficient to state that the grapes are conforming or non-conforming, better or worse than expected. It is necessary to establish which qualitative parameter is legally relevant and which effect is attached to its ascertainment by the contract, by the regulations or by a documented practice.
The first point to be clarified is that quality does not necessarily coincide with non-performance by the producer. In wine-sector relationships, before operating as a measure of conformity of performance, it may operate as a criterion for the economic valorisation of the product. Where the grapes display characteristics superior to ordinary standards, or are suitable for a more remunerative oenological destination, quality may justify an increase in price. Such a premium, however, becomes legally enforceable only if the technical requirement on which it is based has been translated into a contractual or regulatory rule, with an indication of the method of verification and of the consequent economic effect. Failing this, the higher value remains entrusted to the commercial choice of the buyer or cooperative, and does not become an enforceable right of the producer.
Quality may also operate as a criterion for reducing the price or settlement value. This occurs where the product, although taken delivery of and usable, displays characteristics inferior to those on which its economic valorisation was based. In such a case, the reduction is not necessarily punitive in nature: it may simply place the grapes in a different value band. Precisely for this reason, a price reduction is legitimate only if the contract or conferment regulations establish which qualitative deviations affect settlement and according to which criterion. If, by contrast, the winery invokes a generic lower quality without indicating the parameter applied and the technical path followed, the reduction may be challenged as improper performance of the payment obligation or as a deduction lacking legal basis.
Downgrading is different. It is not exhausted by an arithmetical reduction in price, but affects the classification of the product. Where grapes are settled as belonging to a lower category than expected, it is necessary to reconstruct the technical basis of the different classification and to verify whether that basis is grounded in the contract, in the delivery documentation, in the criteria previously made known to the producer or, where relevant, in the applicable product specification. A different classification is legitimate only if it makes it possible to understand which requirement was lacking and why that absence affected the economic destination of the product. Otherwise, downgrading risks becoming an instrument for the unilateral reduction of the price.
The relationship between quality and product specifications deserves particular attention. Where the value of the grapes depends on the possibility of claiming a designation, the different classification of the product cannot be explained by generic commercial formulas19. It must be linked to the technical or documentary requirement that prevented that destination. Only in this way is it possible to distinguish an actual qualitative defect in the grapes from a traceability problem, an organisational choice by the winery or a subsequent allocation of the product to a less remunerative line.
Quality-based penalties follow a different logic again. Not every economic reduction linked to grape quality constitutes a penalty clause. A penalty exists where the reduction does not depend on the different valorisation of the product, but on the breach of an obligation incumbent on the producer. In that case, the deduction performs a punitive or liquidated-damages function and must have a specific contractual basis. It follows that the rules governing penalty clauses apply, including the possibility of challenging the factual basis of the penalty, the imputability of the breach and, where permitted, its manifest excessiveness.
The distinction between a quality-based reduction and a penalty is essential at the remedial level. If the economic variation belongs to the price-determination process, the dispute concerns the correct application of the qualitative parameter. If, instead, the deduction performs a punitive function, the dispute shifts to non-performance, its imputability and the proportionality between the contractual sanction and the buyer’s interest. To superimpose these two levels is to render the legal characterisation of the claim uncertain and to weaken the proof of the facts constituting the asserted right.
Refusal to take delivery represents the most serious case and must remain confined to situations in which the non-conformity materially affects the usability of the product or the agreed destination. Not every qualitative deviation entitles the winery to refuse the grapes. Some deviations affect the price, others the classification, and others may support a penalty; refusal, by contrast, presupposes a radical unsuitability in relation to the agreed minimum requirements or to the economic function of the relationship. A winery that refuses the product must therefore prove an essential non-conformity.That non-conformity must make taking delivery contrary to the contract or render the product unusable for the agreed destination. Failing this, refusal to take delivery constitutes non-performance by the buyer, with particularly significant damages consequences given the seasonal and perishable nature of grapes.
Evidence plays a decisive role in this area. The producer who invokes a premium or challenges a downgrading must prove the technical parameter on which the claim is based; the winery that reduces the price, applies a deduction, changes the classification or refuses to take delivery must make the reason for its decision verifiable. Delivery documentation thus becomes the point of connection between the agricultural fact and the legal fact. It does not perform a merely administrative function, but makes it possible to render the quality of the product opposable and reviewable during performance and, if necessary, in court.
In cooperative conferment, quality operates through partly different instruments, but with an analogous requirement of transparency20. It affects the internal classification of the product, the settlement band, the possible recognition of increases and the equal treatment of member-contributors. Where the regulations proceduralise conferment through calendars, authorisations, delivery notes, inspections21 and complaint mechanisms, quality is relevant not only as an economic parameter, but also as a criterion of mutualistic fairness. Members who confer homogeneous products cannot be settled according to different criteria unless the difference is based on general, prior and documentable rules.
The critical issue in practice, therefore, does not lie in the fact that quality affects the price or settlement value, which is physiological in the wine supply chain. It lies in the risk that quality may be used as an indeterminate category capable of justifying any reduction in value without a previously defined technical method and without documentation capable of making the decision of the winery or cooperative reviewable.
4. Contractual Imbalance, Unfair Trading Practices and Production Costs
In the sale of grapes, contractual imbalance becomes legally relevant when it affects price formation or alters its application during performance. Mere economic asymmetry between the grape grower and the winery is not sufficient, since such asymmetry is physiological in many supply-chain relationships. The problem arises when the buyer’s greater organisational or commercial strength is used to modify the valuation criterion, defer payment, introduce deductions not agreed upon, transfer to the producer risks unrelated to his or her performance, or compress the value of the product through criteria that cannot be verified22.
The rules on unfair trading practices must be understood in this perspective. Legislative Decree No. 198/2021 does not establish what the price of grapes must be, nor does it allow a general review of the economic convenience of the exchange. Its function is different: to safeguard the fairness of the relationship, preventing the price from being constructed or modified through opaque, unilaterally variable or excessively burdensome conditions for the supplier. The scrutiny therefore does not concern the economic merits of the transaction, but the manner in which the price is agreed, applied and paid23.
An unfair practice arises, in particular, where the buyer alters ex post the economic arrangement already defined between the parties. This occurs where the settlement parameter is replaced after delivery, where the quality criteria are modified during the relationship, where deductions not provided for are applied, or where the price reduction depends on rules made knowable only subsequently. In such cases, the issue is no longer merely the determinacy of the price, but the breach of the contractual criterion that should have governed its formation.
The deferral of payment has similar relevance. Grapes are a seasonal and perishable product; delay does not merely cause financial prejudice, but affects the economic balance of the harvest campaign. Where the price is parametric or intended to be settled subsequently, the contract must make it possible to identify the moment at which the price becomes definitive and payable. Deferred price determination cannot turn into an indefinite suspension of the payment obligation. For grapes and musts intended for wine production, any derogations from the ordinary payment terms remain admissible only within the limits and under the conditions provided for by the special rules24.
Imbalance may also emerge through an improper allocation of risk. The producer is liable for the conformity of his or her performance, for the promised quality, for compliance with cultivation obligations and for the agreed delivery methods. The producer cannot, however, be required to bear economic consequences belonging to the buyer’s sphere, such as unsold stock, organisational inefficiencies of the winery, subsequent commercial losses or costs not inherent in the sale of the product. A clause transferring such risks to the grape grower alters the economic function of the contract and may qualify as an excessively burdensome condition.
The reference to production costs strengthens this control, but must not be interpreted as introducing a statutory price for grapes. Production cost does not automatically replace the agreed price, nor does it assign to the court the task of ensuring the profitability of the transaction25. It operates, rather, as a parameter for assessing the fairness of the relationship where the price is imposed by the buyer or derives from a structurally imbalanced contractual condition26. The amendments introduced by Article 4 of Decree-Law No. 63 of 15 May 2024, converted, with amendments, by Law No. 101 of 12 July 2024, inserted into Legislative Decree No. 198/2021 the definitions of “average production cost” and “production cost” and strengthened the relevance of costs in the assessment of contractual conditions, without transforming them into an inderogable statutory price27.
A concrete assessment therefore remains necessary. The average cost recorded by ISMEA may constitute a benchmark, but it does not exhaust the inquiry, since the actual cost of grape production depends on the characteristics of the undertaking, the vineyard, the production method and the harvest campaign. The average figure may guide the assessment; the documented farm-level cost may become relevant where it shows that the standard parameter does not adequately represent the specific productive organisation28.
Below-cost selling is a distinct situation from a merely non-remunerative price. Article 7 of Legislative Decree No. 198/2021 regulates below-cost selling of fresh and perishable agricultural and food products, allowing it only in limited cases and providing, in the event of infringement, mechanisms for replacing the unlawfully applied price. In this context, the legislature does not merely sanction the unfair conduct, but directly affects the economic arrangement of the relationship, precisely because below-cost selling may become an instrument of pressure on the supplier and of distortion of the proper distribution of value within the supply chain29.
Abuse of economic dependence retains a further function and, in relation to the special regime on unfair trading practices, a generally residual one. Not every low price, payment delay or unfavourable clause amounts to abuse under Article 9 of Law No. 192/1998. It is necessary that the producer be, vis-à-vis the purchasing winery, in a position of economic dependence that can be concretely assessed, also in light of the real possibility of finding satisfactory alternatives on the market. From this perspective, symptomatic indicators may include the perishability of the grapes, the proximity of the harvest, the absence of alternative channels for conferment or sale, the existence of specific investments required by the winery, the continuity of the commercial relationship and the possible difficulty of reallocating the product promptly to other operators. Only where that situation is exploited by the buyer in order to impose unjustifiably burdensome conditions, non-agreed amendments, arbitrary price reductions, deductions without legal basis or payment methods incompatible with the balance of the relationship may ordinary contractual asymmetry acquire relevance as abuse of economic dependence30.
In cooperative conferment, finally, imbalance assumes a different configuration. It does not operate as an unfair trading practice in a sale to a third party, but as a possible deviation from the mutualistic function. Scrutiny is grounded in the articles of association, the conferment regulations, corporate resolutions, information duties and equal treatment among members. Here too, the issue is not to review ex post the economic convenience of the settlement, but to verify whether the member has been subjected to opaque, discriminatory criteria or criteria inconsistent with the rules governing the cooperative organisation.
5. Civil-Law Remedies and Reconstruction of the Relationship
The producer’s remedy cannot be identified by starting solely from the fact that the grapes were paid for or settled at an amount lower than expected. In wine-sector relationships, the lower value recognised to the product may depend on legally different causes: an insufficient price clause, the incorrect application of the agreed criterion, a deduction lacking legal basis, an unjustified downgrading, an improperly applied penalty or an unlawful refusal to take delivery. The choice of remedy therefore presupposes a proper classification of the specific defect affecting the relationship. The facts constituting the claim, the burden of proof and the content of the available remedy all depend on that classification.
Where the contract does not state a fixed price and does not contain criteria capable of making it determinable, the problem affects the very structure of the monetary obligation. Nullity, however, is not an automatic consequence. It is first necessary to verify whether the price can be reconstructed through statutory criteria, trade usages, price lists, normally applied values or other objective parameters compatible with the contractual arrangement. Only where such reconstruction is also impossible, and the price remains devoid of any reconstructive criterion, does nullity for indeterminacy of the subject matter arise, pursuant to Articles 1346 and 1418(2) of the Italian Civil Code.
A different situation arises where the price criterion exists but has been applied in a manner inconsistent with the contract. In that case, the producer does not challenge the validity of the economic clause, but its performance. The ordinary remedy is an action for performance, aimed at obtaining payment of the differential amount due. The claim must reconstruct the agreed parameter, the relevant technical datum, the calculation or classification error and the amount that would have resulted from a correct application of the contractual rules. From this perspective, proof cannot disregard delivery documentation, analyses, settlement statements, the price lists applied and the communications through which the winery justified the valuation of the product.
Deductions not agreed upon raise a further issue. They do not necessarily concern the determination of the value of the grapes, but the reduction of the amount payable through the charging of costs, penalties or adjustments that must have an autonomous legal basis. The buyer cannot merely refer to the outcome of the harvest campaign, the quality of the product or generic management needs. It must indicate the contractual source of the deduction, the condition allowing its application and the criterion followed to quantify it. Failing this, the producer may claim payment of the amount improperly deducted or restitution of the amount unlawfully withheld.
Downgrading, by contrast, requires an assessment centred on the classification of the product. It is not sufficient to assert or complain that the settled price was lower than expected; it is necessary to challenge the technical basis of the different classification. The court must therefore verify whether sugar content, sanitary condition, compliance with the product specification, suitability for the designation or other relevant elements actually justified the economic class applied by the winery. If the downgrading proves unfounded, the remedy consists in the ascertainment of the correct classification and an order requiring payment of the higher amount due.
Quality-based penalties follow a different logic. Where the economic reduction does not represent the mere placement of the grapes in a lower value band, but the punitive consequence of non-performance by the producer, the rules governing penalty clauses apply. In that case, the producer may challenge the existence of the breach, the attribution of the non-conformity to his or her own conduct, proof of the technical condition relied upon and, where the relevant requirements are met, the manifest excessiveness of the penalty under Article 1384 of the Italian Civil Code. The distinction is essential, because a price variation belongs to the process of product valuation, whereas a penalty presupposes legally attributable non-performance.
Failure to take delivery represents the most serious defect. Here, the dispute does not concern only the amount payable, but the loss of the possibility of placing a seasonal and perishable product on the market. The producer must allege the existence of the obligation to take delivery, the placing of the grapes at the buyer’s disposal, the essential conformity of the product with the agreed requirements and the damage resulting from the refusal. In order to avoid liability, the buyer must prove a non-conformity such as to render the product unusable for the contractual destination or radically inconsistent with the agreed minimum requirements. Failing this, the refusal constitutes non-performance and may support, according to the producer’s concrete interest, a claim for performance, termination or damages.
The quantification of damage must also remain aligned with the defect alleged. In underpayment cases, what matters is the difference between the amount settled and the amount due; in cases of unlawful deductions, the amount improperly deducted; in downgrading cases, the difference between the class applied and the correct class; in cases of failure to take delivery, the loss may extend to the value of the product not placed on the market, the costs incurred to preserve or reallocate it and the loss of alternative sales opportunities. Proof must be built on verifiable data, not on generic assessments: commercial documentation, market values, costs incurred, comparable contracts and, where necessary, technical assessments.
The rules on unfair trading practices are grafted onto these remedies without replacing them. A breach of Legislative Decree No. 198/2021 may affect the validity of the clause, the lawfulness of the buyer’s conduct and the reconstruction of the relationship, but it does not absorb the producer’s civil action31. The administrative sanction and any finding by ICQRF32 may strengthen the proof of the unfairness of the conduct; it remains necessary, however, to identify the civil-law remedy consistent with the defect alleged: payment, restitution, damages, partial nullity or supplementary completion of the contract33.
Where a clause allowing unilateral modification of the price, the application of unjustified deductions or the transfer of risks belonging to the buyer falls away, the court is not called upon to determine a fair price autonomously. Rather, it must eliminate the unlawful clause and preserve, as far as possible, the valid core of the transaction. From this perspective, partial nullity, the automatic substitution of mandatory statutory terms and supplementary completion of the contract become relevant. The function of the remedy is not to rewrite the transaction, but to prevent the price from being formed or reduced through a prohibited, opaque or unilaterally modifiable criterion.
In cooperative conferment, the remedial framework assumes a different configuration, because the member does not act as an external seller, but within a corporate and mutualistic relationship34. The challenge may concern the conferment regulations, the resolution establishing the settlement criteria, the individual settlement statement, the classification of the product, unequal treatment, failure to provide information or the incorrect legal characterisation of the amounts paid. The remedy depends on the nature of the defect: challenge to the resolution, request for documentation, action for ascertainment of the correct settlement, claim for payment of the sums due or liability action35.
In this context, the conferment of the product must not be automatically assimilated to a sale to a third party. Conferment is grounded in the corporate relationship and in the cooperative’s mutualistic rules. However, where the dispute concerns the settlement of the conferred product, the claim cannot be referred indistinctly to the internal life of the company alone. It is necessary to verify whether the member is asserting a strictly corporate right, a ristorno, a profit entitlement, or the correct remuneration of the product brought into the mutualistic circuit36. The limitation period37, the burden of proof, the relevant documentation and the available remedy depend on that classification.
The construction of the claim must therefore proceed according to a rigorous sequence. It is necessary to identify the source of the right asserted, isolate the technical fact that affected the value of the grapes and select the remedy consistent with the defect found. Without this progression, the dispute risks becoming a generic challenge to the price; with it, by contrast, the proceedings are brought back to their effective core: establishing whether the value recognised to the product was formed according to the legally required criterion.
The most appropriate remedy is not always aimed at setting aside the transaction. In wine-sector relationships, the producer often has an interest in preserving the contract and obtaining the correct value of the product, rather than in denying the entire transaction. Nullity, termination and full damages remain available in the most serious cases. In most cases, however, effective relief is achieved by reconstructing the price due, neutralising the unlawful clause or conduct, and ordering payment of the difference.
6. Conclusions
The regulation of grape pricing shows with particular clarity that, in the wine supply chain, the value of the product cannot be reduced to a final figure detached from the process through which that value is formed. The price, or in cooperative relationships the settlement value, is the end point of a sequence in which technical assessment of the product, oenological destination, classification rules, contractual structure and, in cooperative relationships, mutualistic settlement criteria converge. Price variability is therefore not an anomaly to be corrected, but a physiological feature of the sector. It becomes pathological only when it results in indeterminacy of method, opacity of settlement or an uncontrolled discretion of the party that takes delivery, classifies or settles the product.
The central rule follows from this premise. Italian law does not require the price of grapes always to be predetermined as a fixed amount; it requires the criterion by which the price is formed to be predetermined. The contract may refer to qualitative parameters, technical assessments, price lists, classifications or mechanisms of subsequent settlement. It cannot, however, rely on formulas lacking operative content, thereby leaving the winery alone to choose the value to be recognised to the producer. In other words, the legitimacy of deferred pricing depends on the controllability of the procedure by which the price is determined.
Grape quality confirms this approach. It may justify a premium, a different settlement band, a downgrade or, in the most serious cases, refusal to take delivery. Each of these effects, however, requires an autonomous legal basis and a technically reconstructable assessment. Quality cannot be invoked as an elastic formula capable of legitimising any reduction in the value recognised for the product. In order to affect the price validly, it must be translated into a parameter, measured according to a method and documented in such a way as to allow the producer to understand its application and, where necessary, to challenge it.
The rules on unfair trading practices reinforce this requirement without altering the function of ordinary contract law. Legislative Decree No. 198/2021 does not introduce a statutory price for grapes, nor does it allow the court to substitute its own assessment of economic convenience for that of the parties. Rather, it intervenes in the way the relationship is constructed and performed, preventing the buyer’s contractual strength from being translated into unilateral amendments, indefinitely deferred payments, excessively burdensome conditions or improper transfers of risk. The scrutiny therefore remains one of method and legality of the procedure, not of the economic merits of the exchange.
In cooperative conferment, the same requirement assumes a different configuration. The member does not sell grapes to a third party, but brings the product into a mutualistic organisation, in which settlement may legitimately depend on management results and internal valuation criteria. Yet the cooperative nature of the relationship does not weaken the duty of transparency. On the contrary, precisely because a price in the strict sense gives way to a mutualistic settlement, it becomes essential for the member to verify the source of the criterion applied, the classification attributed to the product, the basis of any deductions, the distinction between advance payments, balances, adjustments and ristorno, and equal treatment in relation to other contributing members.
Remedies must also be constructed according to this logic. Disputes over the price of grapes do not admit undifferentiated remedies. Where a determination criterion is lacking, the issue concerns the validity of the economic clause or its completion by operation of law. Where the criterion exists but is incorrectly applied, the ordinary remedy is payment of the differential amount. Where deductions, downgrades, penalties or refusals to take delivery are involved, the dispute must focus on the respective technical and legal basis. In the cooperative relationship, the challenge instead shifts to the mutualistic regulations, corporate resolutions, correct settlement and, where necessary, corporate-law remedies.
The Italian model thus reflects a broader European concern, although through its own legal techniques. EU law on unfair trading practices, the French emphasis on written agricultural contracts and objective price-determination criteria, and the more interventionist Spanish rules on production costs all point to the same structural issue: the value of agricultural products must not be left to opaque or unilateral mechanisms within the supply chain. Italian law does not adopt a general judicial review of price adequacy, nor does it fully transform production costs into a statutory substitute for the agreed price. Its approach is more procedural: it requires the formation of value to be governed by prior, knowable, documented and consistently applied criteria.
The final point is therefore more precise than a generic need to protect producers. The law does not guarantee a convenient price, nor does it neutralise the economic variability inherent in the harvest. It does, however, require that such variability be governed by rules that are prior, knowable, consistently applied and verifiable through documentation. Digital traceability tools may also become relevant in this perspective.
Where weight, analytical data, classification results and settlement criteria are recorded in secure and non-alterable systems, including, where appropriate, blockchain-based or equivalent registers, they may strengthen the documentary verifiability of the price-formation process. Such tools do not replace contractual rules or legal remedies, but may support the procedural transparency required by mature wine-sector contracting.
Mature wine-sector contracting should not artificially rigidify the price of grapes, but should regulate the process of its formation, transforming quality, classification and settlement from possible sources of conflict into controllable elements of the relationship. From this perspective, the price is not the final result of an opaque decision, but the legally verifiable outcome of a procedure consistent with the economic function of the supply chain.
The full text of the article is published in Open Wine Law, (6) 2026
DOI. https://doi.org/10.20870/owl.2026.10211
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