Where should I sell my tennis racquets, shoes and apparel on line?

I run www.savegear.com, which provides hundreds of Squash, racquetball and tennis racquets, shoes and apparel. Carries brand products from Head, Volkl, Prince, Babolat, Dunlop and Wilson. How can I marketing for them on line? Besides eBay, where can I atrrak more buyers and sell them? Where can I find people who is willing to [...]