In this webinar, attorney and licensed customs broker Jack Shelton explains the fundamentals of a sales contract including why you need a written contract. A sales agreement is used to describe and track the exact details of quantity and cost of purchasing or selling goods, services, or real estate.A Sales and Purchase Agreement (SPA) is a legal contract that details the agreement's terms and conditions. Use a Business Bill of Sale to set out the terms for the sale of a business and transfer the ownership and all assets to the buyer. Download our business purchase agreement templates for free, and ensure that you have a smooth and easy sale process. The signatory generally should make sure that the company's name and the signatory's name and title are included. This business sale agreement template can be used as a binding document to govern the sale of a business to a new owner.