1. Enter seller and buyer contact information. It contains information about the buyer and the seller, a description of the vehicle being sold, and information about the transaction, such as price.The bill of sale, which was mostly filled out ahead of time, can now be completed with the buyer's contact information and the sale price. A recreational vehicle (RV) bill of sale outlines a transaction between a buyer and seller involving the purchase or exchange of an RV. The Texas bill of sale form verifies the elemental facts of the sale of personal property in exchange for a predetermined compensatory amount. How to fill out the Recreational Vehicle (RV) Bill of Sale Form? 1. Enter the sale price and the names and addresses of the buyer and the seller. Free Printable Bill Of Sale For Trailer. A legal document used in the United States to record the transfer of trailer ownership between parties. The DMV does not provide a bill of sale document but this form may be used to legally transfer the ownership of a vehicle from one (1) party to another.