This seems to have escalated into a full time preoccupation.
I would doubt that the seller was trying to scam anyone. There are too many checks and balances in the way. Getting away with a few "sales" that weren't followed up on for $13 each would seem pretty futile. If I were trying to do so, I would have made the sales price much higher. More likely, the seller misquoted a selling price of $130.00 as $13.00. This would be consistent with other offerings. While they should have just cancelled orders saying that the sales price was in error, for whatever reason, they didn't do so. Perhaps this was due to their inexperience. I suspect that many of these e-bay sellers are operating out of their residences, just trying to make a few extra bucks. More than likely, they are totally unfamiliar with US commerce laws.
From a buyer's standpoint, it is ludicrous to think that someone would be selling a new 6" 3 jaw chuck with reversible jaws and backing plate for $13, shipping included. Even if it were a stolen item, the cost of shipping would eat up any incentive.
Expecting someone to make good on an misquoted offer just seems less than charitable IMO.