A few years back on the APUG classifieds there was a place in the add that allowed the buyer to give feedback. It gave information about the buyer, etc. Now the "ads" just look like a regular forum post. I made some terrific purchases awhile ago and was more than happy with everyone I dealt with. Most everything listed here is priced as if the owner was selling it to a friend and that's nice to see these days- worth the price of a subscription alone!