Definition
Latin: "as much as they were worth." A common count in an action of assumpsit brought by a seller to recover the reasonable value of goods sold and delivered to a defendant. The count rests on an implied promise: where a defendant has received goods without a fixed price having been established, or where a fixed-price contract has failed, the law implies a promise to pay what the goods were reasonably worth.
Quantum valebant is the goods-equivalent of quantum meruit, which applies to services rendered. Both are quasi-contractual remedies that allow a plaintiff to recover in the absence of an enforceable express contract — or where enforcing the contract's stated price would be impossible or unjust.
The count historically appeared in two principal situations: (1) where goods were sold and delivered but no price was agreed upon, triggering an implied obligation to pay fair market value; and (2) where a contract existed but was not fully performed — typically because the seller supplied goods of a different kind than specified — and the buyer, rather than rejecting the goods, accepted them, entitling the seller to the actual value of what was delivered even though the contract price could not be claimed.
Common Confusion
Quantum valebant and quantum meruit are routinely conflated, and the distinction matters in historical pleading records. Quantum meruit ("as much as he deserved") covers services; quantum valebant covers goods. In modern practice, both are often subsumed under general implied-contract or unjust enrichment theories, and courts and practitioners may use quantum meruit loosely to encompass both. Researchers encountering either term in older pleadings should verify whether the underlying claim concerns labor or goods before drawing conclusions about the legal theory at issue.
Why It Matters in Research
Researchers working with common-law pleading records prior to the mid-nineteenth century will encounter quantum valebant as a routine count in assumpsit actions. Because it was a common count — a standardized, formulaic pleading device — its presence in a declaration does not necessarily reveal the true nature of the underlying dispute. Parties routinely pleaded all available common counts together, including quantum valebant, indebitatus assumpsit for goods sold, and account stated, as a hedge against proof failures at trial. A declaration listing quantum valebant alongside other counts should not be read as evidence that the contract price was actually disputed.
The abolition of common-law pleading forms in most American jurisdictions (generally through code pleading reforms beginning in the mid-1800s, and later through adoption of notice pleading) eliminated quantum valebant as a formal pleading device. Modern cases rarely use the Latin label, instead framing equivalent claims as unjust enrichment, implied contract, or restitution. Researchers tracing a doctrine forward in time must shift terminology accordingly.
The Rapalje & Lawrence entry captures an important nuance absent from Black's: quantum valebant is available even where a contract existed and was breached by the seller's delivery of nonconforming goods, provided the buyer accepted rather than rejected those goods. This election-to-accept scenario makes quantum valebant relevant not only to no-contract situations but also to failed or partially performed contracts, which broadens its doctrinal footprint in commercial dispute records.
One research trap: because quantum valebant is a count and not an independent cause of action, appellate records may not identify it by name even where the underlying recovery was plainly based on the reasonable value of goods. Look for the theory, not just the label, when tracing this doctrine in post-code-pleading sources.
Historical Dictionary Support
The four shelf sources are in close agreement on the core definition. Black's (both editions) and Burrill converge on the same formulation — a common count in assumpsit for goods sold and delivered, resting on an implied promise to pay reasonable value — and cite the same authorities (Blackstone's Commentaries and Tidd's Practice). This consistency reflects the term's status as settled pleading vocabulary by the nineteenth century, not a contested legal concept.
Rapalje & Lawrence add the most substantive legal content by addressing the nonconforming-goods scenario: where a seller delivers different goods than contracted for, and the buyer accepts them without rejection, the seller cannot recover the contract price but may recover actual value via quantum valebant. This distinction between contract recovery and restitutionary recovery is analytically significant and is the one place the shelf sources diverge in depth of treatment.
What the historical dictionaries collectively omit: any discussion of how quantum valebant interacted with the developing law of sales — particularly as commercial law became more systematized through the latter half of the nineteenth century — or how it was absorbed into statutory and restitutionary frameworks. Researchers should treat these entries as describing the term in its classical common-law pleading context and look elsewhere for its doctrinal evolution.
Jurisdictional Note
Quantum valebant as a formal pleading count was eliminated across American jurisdictions as code pleading replaced common-law forms, with the Field Code of 1848 in New York serving as the model. English practice followed a parallel trajectory under the Judicature Acts. The underlying substantive right — recovery of reasonable value for goods delivered — survived in all common-law jurisdictions and continues under modern restitution and unjust enrichment doctrine, though the Latin label has largely disappeared from contemporary practice.