My friend went to vegas.?

My friend went to the vegas race and had drivers sign a ed hardy underwear. He had kasey kahne, jeff gordon, dale jr, brad k and dale jarrett to sign it. Than he had a juicy courture thong and had Jeff Gordon's wife, Kim Burton, Scott Speed's fiancee, Robby Gordon's sister, Kyle Busch's girlfriend, Kurt's wife and Connie Montoya. He wants to put it on ebay and donate money to diabetes research. How much can he get for each?