This was actually discussed in a previous thread, I know little of it but, one point a responder made was the key to being successful in that type of business is getting as many people as possible to see your wares. Meaning use facebook, twitter, maybe back through ebay?, flyers, forums or wherever you can.
Mass free promotion, push push push it. Since only a small percent will buy it becomes a sheer numbers game.
Good luck, you will need it.