Seven people have bid on this, starting at $5,000 and reaching $8,100 and still haven't reached the reserve price!
So why bother starting an auction at a low price that you won't accept?
I know that Ebay claims that bids are binding, but they aren't if you haven't hit the reserve. I think that people are just playing around, i.e., it's amusing to bid $8000 for an item when you don't have to buy it.
I have no experience with Ebay, but I doubt that they can force you to pay for an item even if you participate in and win an auction. Even in the real world, I've seen people win auctions then fail to purchase the item (no doubt, the WTF did we just do reaction).