Bidding Pond
Bidding Pond is Bitcoin's first site dedicated to offering best bid and fixed price auctions for the Bitcoin economy.
Listings
Payment methods for an auction listing on BiddingPond may include non-bitcoin methods as well, such as PayPal and cash.
Fees
A seller can list an auction at no charge. BiddingPond does have optional services, such as the Buy Now and Highlighted Listing features which do incur fees.
New accounts reportedly receive a credit balance, enough so that an auction or two using the optional services can be made at no cost.
Restrictions
There are few restrictions compared to other online auction services such as eBay.