Here is an example of what a business purchase agreement might look like. Key facts about business asset purchase agreement (APA) and sample template for asset sale in Florida and explanations about what should go in an APA.Sales contracts are legally binding written agreements that govern a transaction between a buyer and a seller. The easiest way to create a Business Purchase Agreement is to use a template that is customized to your state. This agreement includes specifics such as purchase price, the scope of the sale, payment arrangements, and more.