I was just watching a show were the guy who was doing the bidding made 10 percent on the total. Just on the Ferrari he bid on made 125,000 dollars. It took him hanging around for a few hours hidden. The reason why he hides is other professional bidders raise their bids based on his appearance. When he bids the auctioneer calls him bidder on the right. The point is for hanging around for a few hours he made huge money.