Active buyers and sellers who love niche auction sites often have the best of both worlds. They can check out the action on the major sites, then jump to their favorite niche sites, and bounce back and forth as the listing clocks tick down. Sometimes, they can buy on one site, sell on another, score a new bargain on one of the big auction sites, and then bring it to the niche site and make a nice profit, all in a matter of days.

Once you are ready to become an online seller, check the back corners of your closets, shelves, and attic very carefully. You may have items stashed away that could make you very popular on a niche auction site.