The Uniform Commercial Code (UCC) has been adopted in whole or in part by the legislatures of all 50 states. A contract for the sale of goods may be oral or written. In some cases, it must be evidenced by a writing or it cannot be enforced in court. Under the UCC, contracts for the sale of goods where the price equals $500.00 or more (with some exceptions) fall under the statute of frauds of Article 2. Whenever the sales price of goods is $500 or more, the sales contract must be evidenced by a writing to be enforceable. The writing may be either a complete written contract signed by both parties or a memorandum (confirming letter) signed by the defendant.
When the transaction is between merchants, an exception is made to the requirement of signing. The failure of a merchant to repudiate a confirming letter sent by another merchant within ten days of receiving such a letter binds the merchant who did not sign just as he had signed the letter.