The lesser of the 2 evils would be some idiot just running you up. The other side of it would be hard to take but the thing that bothers me is that its someones job to sell this stuff to us and the only way they look good in managements eyes is to get top dollar for it. A lot of the teams now have game used stores at the ball parks where they could get a premium prices on their items. If an item posted on an auction site isn't meeting what they consider to be fair market value expectation then why not have a shill run it up??? Worse case scenario is they win the bid and sell the item at a later date thru their store . I'm not saying this is whats happening just that it could easily be done.
You can understand shill bidding from an auction house or ebay then you should also be wondering as I do if is it happening here. Auction house, ebay or mlb are all doing it for money so why would one be any better than the other.