PARTIES: The parties to this contract are. (Seller) and. (Buyer).How to fill out the Texas Wholesale Purchase Agreement Contract PDF? 1. Identify the buyer and seller in the agreement. 2. Streamline your real estate transactions in Texas with our customizable purchase agreement. Ensure legal compliance and purchase or sell properties. A purchase and sale agreement is a contract between a buyer and seller for transacting a property in exchange for a specific price. Write a comprehensive Texas residential purchase agreement to streamline your property transaction. Download a template here.