AberBid
Online auctions for high performance computer hardware upgrades, motherboards, motherboard kits, processors and memory.
http://www.aberbid.com/

C/Net Clearance Center
Provides auctions for computer systems, hardware, and software.
http://clearance.cnet.com/

CompUSA Auctions
Auctions of refurbished, discontinued, and returned items, organized by category.
http://www.compusaauctions.com/

Computer Care Auctions
Free computer and software auctions. Also has options for other categories.
http://www.shopcomputercare.com/auction/index.html

Dell Computer Auction
Online auction house for Dell computers.
http://www.dellauction.com/

Earthweb Direct
Buy new or visit the online auction for computer related products.
http://www.earthwebdirect.com/

Morgan Auction
Online computer auction of surplus computer equipment.
http://www.morgan-auction.co.uk/

The Auction Depot Computer Sales
Offers limited computer auction sales. New items are generally added daily.
http://www.auctiondepot.com/

U-1.ca
Canadian site which has online auctions, classifieds, and free ads.
http://www.u-1.ca

WholesaleAuction.com
Dealer only auction site for computer related merchandise.
http://www.wholesaleauction.com/