Not really understanding that, simply all any Dealer has to do is pick an Aston or used Dealer that advertises for this type of vehicle " WANTED"..... Call them, describe the car and ask them to "UNDERWRITE IT" this way once they have taken your part/ex from you at the agreed price, they wheel it down to the Dealer who "UNDERWROTE" it and collect payment, this is a well know balance in the Trade. Simples