Seller Name (first, middle, last, suffix). Bill of Sale ; Library File Link.An RV Bill of Sale is a legal document that serves as proof of the sale and transfer of ownership of a recreational vehicle (RV) from a seller to a buyer. An Arizona Bill of Sale for RV Trailer is a formal document used to record the sale or transfer of RV trailers between a seller and a buyer in Arizona. What is Needed for a Recreational Vehicle (RV) Bill of Sale? The recreational vehicle bill of sale provides an easy way to protect your purchases and get proof of your vehicle's ownership.