The CISG is a set of rules that governs the rights of sellers and buyers that engage in contracts involving the international sale of goods. In this webinar, attorney and licensed customs broker Jack Shelton explains the fundamentals of a sales contract including why you need a written contract."Contract for sale" includes both a present sale of goods and a contract to sell goods at a future time. Current Statewide Term Contracts can be found on this page. A real property contract is a contract between a real property contractor and another person to perform a capital improvement to real property. Combinations in restraint of trade illegal.