Amazon.com
There is a monthly subscription fee (starts form $39.99 up to $99.98 USD) plus the selling fees (from $0.80 USD to $1.35 USD or a flat fee of 7.00% for Amazon Web-Store Owners) and the referral fees which varies by category (from 6.00% for pc products to 20.00% for grocery, beauty and jewelry products). A seller can also sign up with Amazon as an individual seller which has no monthly fee but a per product sold fee of $0.99 USD.
LiveSimon.com
Free on line auction site. No listing or buy now or reserve or selling fees. Sellers are paying only if they want to use the upgrade options to promote even better their products or/and services like featured items, bold characters etc. These upgrades are optionals.
eCrater.com
100% free marketplace. No listing fees. No closing fees. But you can not use html while you create an auction sale page. If this is not a problem for a seller then eCrater is the place you might looking for. You will also find a forum which you can exchange more information about eCrater. I suggest you to give it a try.
Ioffer.com
A place to buy, sell and trade with a totally free store (for sellers that use to sell multiple items will have to add $2.00 USD to their Ioffer account). Unlimited free image hosting. No listing fees. Sellers are free to use html and they pay only (if they want to) to featured items or to use bold characters etc. Also there are closing fees that starts from $0.50 USD (for items which priced from the seller up to $4.99 USD) to $40.00 USD plus 1.50% (for items which priced from sellers for $1,500.00 USD or more). Sellers also can create catalogs and wholesale lists but they have to pay an additional $7.50 USD fee.
Bidz.com
On line auctions only for jewelry and watches. Recommended source for buyers who are reselling (on line or off line) jewelry, watches, gifts etc. They will find quality products at manufacturer's prices.
AuctionFire.com
No listing fees. Free image hosting and featured items. Closing fees are 2.50% against the final sale price without including the shipping charges, just the product price. Sellers will pay $3.00 USD to verify their membership with Auction Fire and if they want to transfer their feedback from another site they will have to pay an additional $6.00 USD fee.
iBidFree.com
No listing fees. Free gallery, bold characters and highlighting. Closing fees starts from $0.50 USD (for items which priced between $0.00 USD to $50.00USD) to $100.00 USD + 1.50% (for items which priced from $100,000.00 USD to $100,000,000.00 USD).
Auction-Warehouse.com
A completely free public auction website. Sellers will be charged only if they make use of Auction-Warehouse optionals that includes bold, featured, colored listings etc. Credit card is required for sellers that want to register an account with Auction-Warehouse for verification reasons. Sellers can also sell their wholesale listings without any further charge.
You might also want to take a look at VStoreAuction.com, Free-Auctions.ca, BidMonkey.com, OnLineAuctionExchange.com, eBid.net, TotalBids.co.uk, 121Bid.com, 124Sold.gr . The list is nearly endless. Good Luck.