Editing Uniform Commercial Code (section)

=== Contract formation ===
* Firm offers (offers to buy or sell goods and promising to keep the offer open for a period of time) are valid without consideration if signed by the offeror, and are irrevocable for the time stated on the purchase order (but no longer than three months), or, if no time is stated, for a reasonable time.<ref name="UCC|2|205">{{UCC|2|205}}</ref>
* An offer to buy goods for "prompt shipment" invites acceptance by either prompt shipment or a prompt promise to ship. Therefore, this offer is not strictly unilateral. However, this "acceptance by performance" does not even have to be by conforming goods (for example, incomplete sets).<ref>{{UCC|2|206}}</ref>
* [[Consideration under American law|Consideration]]—modifications without consideration may be acceptable in a contract for the sale of goods.<ref>{{UCC|2|209}}</ref>
* Failure to state price—In a contract for the sale of goods, failure to state a price will not prevent the formation of a contract if the parties' original intent was to form a contract. A reasonable price<!-- should this be "whether a price is reasonable"? --> will be determined by the court.<ref name="UCC|2|205"/>
* [[Assignment (law)|Assignments]]—a [[requirements contract]] can be assigned, provided the quantity required by the assignee is not unreasonably disproportionate to the original quantity.<ref>{{UCC|2|306}}</ref>