If no paperwork was sent to you by the creditor how do you find out how much your repossessed car was sold for?

Cotact the lender and ask for a copy of the bill of sale, and a reconciliation of your account. The reconciliation should show the application of the purchase price. If not, demand they correct it. It can take perhaps up to thirty days for the lender to comply, and they may require you make your request in writing.