I have signed up for a few also. The problem with the flea market site is everything is being offered on the same page. It's to cluttered. When you first walk into a flea market you're presented with everything you can possibly think of. People are selling used items, collectibles, some new items, and everything else.
Nothing is neat or orderly, it's a flea market.
You're there to find bargains and no more. You have a lot of good quality products to offer but the site needs some order. Ebay is an excellent example of a flea market site that's set up correctly. Even though they are offering a wide variety of items through their sellers, the site is set up with specific categories and everything is easy to find. They don't try to offer all the products on the first page.