When I was looking to buy my MG TC, I followed several on line auctions. One in particular seemed to have shills bidding. First I noticed the stupid high bids at the beginning of the auction. For example, car worth about $30,000 is on the block. First bid is $5000, okay reasonable opening bid. 2nd. day of the 7 day auction and the next bid is for $20,000! Why would you bid that high at the beginning of an auction? I checked the bidders profile and found that they bid on a lot of auctions. All on totally unrelated types of cars, everything from trucks to Ferraris, and have never won an auction! This type of bibbing sure seems like a shill to me.
I also know of people that got stuck buying their own stuff because they had friends bid up their auctions!
Richard