A recreational vehicle (RV) bill of sale outlines a transaction between a buyer and seller involving the purchase or exchange of an RV. 1. Enter seller and buyer contact information.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. This Bill of Sale is made between. Download a free printable RV Bill of Sale form template online with premium design. Easily fill out the form and print it for your convenience. Access bill of sale form templates and learn how to transfer ownership of vehicles, boats, firearms, and other high-value personal items in Washington. Use our downloadable RV bill of sale template to document the details of an RV sale and help transfer ownership. Use our downloadable RV bill of sale template to document the details of an RV sale and help transfer ownership. A bill of sale template is available on the "Vehicle Forms" page on the Polk County Treasurer's website.