90% of them do not charge any fees for selling. Check them out:

• Trading Post www.tradingpost.com.au - publishes online classified advertisements for the sale and provision of goods and services, including motor vehicles.
• Bid Monkey www.bidmonkey.com - “BidMonkey came about from a group of very determined monkeys who were tired of paying the high costs of listing fees, buy it now fees, this and that fees! BidMonkey is Free to join, Free to sell, Free to enjoy! keep all those bannanas in your bank; while keeping all those fees at “bay”  “
• Tazbar - www.tazbar.com - A UK based online person to person selling venue. It was launched in August 2006. The site offers its members 3 distinct ways to trade, namely Auction Format, Fixed price (Buy Now) Format and Wanted Adverts.
• Oztion www.oztion.com.au - Based in Melbourne, the team behind OZtion are dedicated to provide Australians with a safer, more affordable and more convenient way to buy or sell virtually anything online at anytime.
• iOffer www.ioffer.com - launched in 2002, selling and buying is based on negotiating. There is no bids, reserve pricing, auction end times, and last minute sniping. You can import your eBay ratings and items from eBay.

• Waggle Pop www.wagglepop.com - Wagglepop’s mission is to provide a fair and affordable trading environment, within a community based on trust and representation. There are many different buying and selling options on Wagglepop, including Online Auction format, Online Auctions with the Buy It Now option, and OneBid Instant Purchase items which allow buyers to win and purchase an item using this format with just one bid.
• eCrater www.ecrater.com - a free web store builder and a free online marketplace. Sellers receive free website hosting, a free subdomain and a powerful admin tool to manage their free online stores.
• Auction Quest www.Auctionquests.com - What they says “We’re not eBay (nor will we ever be) … We’re not the biggest … Not the best .. Not even the host with the most … We are however, a tight knit community of friends (family in many cases) who enjoy transacting with one another”
• Get It Or Sell It - www.getitorsellit.com - provide the individuals with a website portal where they could buy sell or exchange online at no cost at all. Lives by the rule “a free ‘virtual’ buying and selling shop, open to the public 24/7.”
• Auction Fire www.auctionfire.com - Auction Fire is an automated online auctions website with thousands of listing categories enabling buyers and sellers to transact in real time. Their mission is to provide buyers with a fun, friendly and safe market place. The administrative philosophy is both refreshing and simple: “we charge no listing fees — not even for cars”.