Did a search and came up with 228,000,000 results for auction sites. I could not find your needle in that hay stack!
Searched for extreme auction sites came up with 62,000,000 results.
I now see why you did not want to spend much money for the domain.
It will take an act of God should someone stumble onto your site. I would think you almost have to give the products away to get any action at all!