The purchaser's signature in section 3 is optional. A Florida bill of sale is a document used to transfer the ownership of personal property from a seller to a buyer.A wellwritten sales contract covers all elements of a transaction and includes remedies should the deal not go as planned. THIS PURCHASE AND SALE AGREEMENT, (the "Agreement") is made and entered into this _____ day of. Below, we've outlined the five steps and forms required for how to sell a car in the state of Florida so you can sell your car quickly for the most cash. We're going to be reviewing and going over the as is residential contract some of the best practices builds and clauses in here.