Seriously, folks, do you think that any seller who puts his collectible car up on the auction block and sees bids getting over $100K is going to jump up and start screaming "Hey! Hold it! You all are bidding too much money on my car! Stop right there so I don't drive up the market to INSANE levels!"
That is why people gamble on auctions. Some will win and some will lose. Some will win BIG time, and others can LOSE big time. Take your number and give it a shot.
And there is absolutely no doubt at all that any auction can be completely controlled by someone bidding who considers money as no object. You just have to hope that someone like that has an interest in what YOU are selling. If TWO like that are interested, well, you're in Fat City then....
Honestly, I wish to hell that I could find a buyer for ANYTHING I would want to sell who would pay more than it is actually worth to ME.