I've spent a little time digging around and wanted to share my results for alternative sites to EBAY that I found appealing. I haven't personally used any of these sites but just wanted to share my results.
UBid -www.ubid.com/
Amazon - www.amazon.com/
EBid - www.ebid.net/
Quick Slaes - www.quicksales.com.au/default.aspx
US Freee Ads - www.usfreeads.com/
Craigs List -sfbay.craigslist.org/
EPier - www.epier.com/
Ziing - www.ziing.com/
Sell Stuff - www.sellstuff.cc/
I Offer - www.ioffer.com/
Online Auction - www.onlineauction.com/
Google Auctions - www.gooleauctions.com/
Swap Space - www.swapace.com/
The Soc Exchange - www.thesocexchange.com/