For wholesale sales, a dealer may use the VIADA's or similarly formatted Wholesale Sales. Agreement in lieu of a Buyers Guide.REG 51 – Report of Sale – Used Vehicle. A "Report of Sale — Used Vehicle" (DMV form REG 51) must be completed when you sell a vehicle to a Consumer. New businesses must file a business license application within 75 days of the date business began. The Dealer Manual is provided primarily as a reference guide for Motor Vehicle Dealer Board. (MVDB) dealer transactions conducted in the State of Virginia. You signed a contract you now want to cancel. Best to read the paperwork you have in your hand and get back over to the dealership today and straighten it out. My ultimate purchase and sale agreement designed exclusively for wholesalers and break it down for you.