I dont know how US system works, but if the chips sold on ebay now are "stolen goods", here all the sales will be void.
I can tell if we will follow Italian Laws (and i don't think this will be different from US) all the auctions will be investigated by authorities and all the buyers will have to justify the buy... selling stolen goods is a crime, but buying stolen goods is a crime too... and everyone could be tracked down in few minutes.
So i guess if a crime has been done then all this chips will come back to the dirt... sellers and buyers will have to be warned.