A marketing technique that usually works, is to make an auction and set the starting bid really, really low. Lets say somewhere between 1-100 tc low, if your set is good enough then people will keep bidding on it, but, when you do this that you will know how much your set should/will sell for. It's all about the marketing baby, and making some profit even if it does turn out to be about 3 tc is better, IMO, then no profit and letting the set rot in your virtual closet.