I suppose we could keep a look out for these outrageous auctions and ask the seller the hard questions but it probably wouldnt make a difference.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=190449884732
I emailed this guy and gave him the figures to show that the value of the the 512K board he listed was only worth between $5 (probably) and $15. He had valued it at over $1300. He emailed me back and said he was going to pull the listing and put the boards in the trash. I invited him to join the forum. I got the feeling that he's an honest guy that made a wrong assumption. I told him that he's not the first person to assume the traces were solid gold. They do look that way to the uninformed.