Shari is right, it's very difficult to sell a good second-hand-costume now in Germany.
Some of us flying to Istanbul and buy costumes from Bella or SIM and sell this costumes one or two years later. These costumes are expensive because of their high-class-work. And after one year You see nothing that the costume is used...But we can't loose to much money with selling. We pay between 500 and 900 Euro for the costumes, cause how much stones and so one on it. And so it's impossible to sell a 700 Euro costume one year later for 200 Euro!
Best regards
Salima