Greetings: There have been a number of sites that have had auctions but none have the critical mass to make it work. I have been at this for over 8 years and I've seen lots come and go even some specifically related to and activity like music and musicians. The problem is if y ou list an item and you pay for the listing then you expect to have a reasonable shot at selling the item. I suspect that the most likely competitor to eBay migh be craigslist, they have a critical mass and all they have to do is change the format slightly and start charging.