This proposal not only specifies the price but all the terms and conditions of the purchase. I'm gonna break down all the terms and conditions so you can understand what it means and we're gonna fill that out so you can have a real-life example of it.The agent will write up a purchase contract including all terms of the sale. An agreement to sell real estate, or a purchase agreement, is a legally enforceable document that specifies the terms of a real estate transaction. Writing an Auto Sale Contract. Write out your own full name, and that of the buyer. The City accepts the Contractor's Offer for the above requirement and enters into the following Contract. This. However, this can give a decent baseline for content creators or actors who are unsure how to write up an agreement. Why do I need a contract? The Winn-Dixie supermarket near you is home to your grocery, and liquor store needs.