The purchaser's signature in section 3 is optional. A master purchase agreement is a legally binding contract between buyer and seller, and typically relates to buying and selling goods rather than services.How to Fill Out the Florida Real Estate Contract For Sale and Purchase We'll See You At The Closing Table! A vehicle sales agreement is a lawful arrangement summarizing the terms and conditions of a vehicle sale between a customer and a seller. Selling or transferring ownership of a car, boat or other item of personal property? Easily create, print, and download a Bill of Sale in minutes. Unless otherwise stated specifically in a Purchase Order, this Agreement shall apply to any and all transactions between Buyer and Company. 1. Definitions. Are you ready to buy a car? Follow these steps to transfer a Florida title and avoid delays. Complete Contract - Master Agreements.