About ten or more years ago there was a national auction firm selling a line of new skid steer attachments (as well as the usual used equipment) at an auction they held near Indianapolis. The attachments were made in Canada- maybe Thomas or Thompson? Anyway, I looked them up on the net and concluded that the auction firm was a routine seller of this brand.
Before the auction, I mentioned it here on TBN and one member from Texas had been to a lot of this auction house's auctions where they sold these new attachments. Now this auction was advertised as an absolute auction-No minimum bids. This member had noticed that if the bid from the crowd did not meet a certain, unspecified value, the auction company always seemed to get a phone-in bid that was the highest. Could be wrong but I suspected the serial numbered attachment on that phone bid would show up at their next location too.
You local auction may be legit but sometimes patterns of behavior permeate an industry.