Yes, it may be unclear for those who don't do a lot of e-Bay.
It's just a comparison of a seller we know is trustworthy with some that we have been questioning. He has very, very few low-feedback bidders and some others have a significant number who seem to run the bidding to some pretty amazing levels.
There's quite a difference in the auction histories.
One explanation for the lack of those low-feedback bidders in Knot2sharp's history is that he's not using shill bidders. Whether others are doing it or not is impossible to tell, but I'm staying away from some sellers and I'm watching a couple of those questionable low-feedback bidders on knife auctions.
A NIB knife ended recently with one of those low-feedback bidders the winner......if he was a shill, that knife will show up again in a new auction because the attempt to shill didn't work and they still have to sell the knife.
I don't know if everybody is aware of it, but auctions are available for inspection even after they expire in "completed auctions." All you have to do is go to the seller's feedback and go through his old auctions and then examine the bidding history on the item.
It can reveal a lot.