New York law includes an almost inexhaustible set of rules and precedents covering a wide spectrum of business transactions. In this webinar, attorney and licensed customs broker Jack Shelton explains the fundamentals of a sales contract including why you need a written contract.The purpose of the CISG is to provide a modern, uniform and fair regime for contracts for the international sale of goods. The customer must furnish the contractor a completed. A critical issue is the lack of contractual documentation associated with most sales transactions. An international sales contract is an agreement between a buyer and a seller that identifies the parties in the transaction, the goods or services being sold. The trade agreement with the government allows a secured platforms for the business to flourish in the international relations. You must pay the Real Property Transfer Tax (RPTT) on sales, grants, assignments, transfers or surrenders of real property in New York City. The United Nations Convention on Contracts for the International Sale of Goods (CISG) is.