My auction site (Blais N Stamps Auctions) has a web store section where one can set up a Web Store.
I presentaly have a Web Store set up which has fixed cost lots for sale.
(Blais N Stamps Shop)
I find it's a good way to list stuff for sale as you don't have to relist items after auctions close.
The Auction site has a nominal fee for opening a Web Store. So if you are interested you should check it out.