looking for classic asp auction software?

We're a "free-will" donation supported site with VERY limited advertising income, so expense IS an issue, however, maybe adding auction abilities to our site could pay for itself....
We are an automotive related forum - folks often echo frustration with the main-stream online auctions, and I think would prefer to auction to members, etc.-  if it was possible. We have a "for sale" section that works pretty well, but I wonder about adding auction abilities?
Anything ASP, classic ASP so as to not add more overhead to the server - and not kill database needs?
Prefer well supported software, commercial is fine as long as we keep in mind, we are not eBay so can't afford the thousand dollar stuff.
Thoughts on a classic asp auction software that would work well with Web Wiz hosting and forums?
If you yourself have one, let me know - custom is ok, again if it can be afforded and supported.