Accident vehicle exchange

Hello together, have the following question. Since my Audi is an economic damage after a water damage, the evaluator will hire the car in a residual value exchange, as he just told me. These are probably portals, where only accident vehicles are hired. But I could also try to sell the car at the same time, that would be quite allowed. If I would then achieve more than the bid from the residual value exchange, that would be to my advantage. Now I wanted to ask if you so There are special addresses where you can hire accident cars. So not mobile.de or Ebay Motors, but special accident vehicle exchanges. MfG