Auction & Barter
Books, clothing, beauty, collectibles, home and garden.
http://www.auctionandbarter.com/
Bid Then Buy
Provides a searchable index of real time auctions occurring on eBay. Featured categories include books, event tickets, crafts, and clothing.
http://auction.bidthenbuy.com/
Bidera
General merchandise sorted by category. Proxy bidding and bulk item uploading.
http://www.bidera.com/
Yahoo Auctions
pop
Offers various categories to buy and sell.
http://auctions.yahoo.com/