Well it's clear what your position is. I am not sure if it's possible to send a sco on a single-item auction, if it is possible, then there is a chance that what you are saying is true, but if there isn't, then.. who knows. So you are saying that it's possible to receive two feedbacks from two different people on the same item, even if it's not a multiple item auction?
Also, I didn't say that the same nick is winning 75% of your items, but at every auction end , every 10 days or so, there is one user who is buying most of the stuff.
It seems odd to me, but I will keep buying your stuff on ebay because there really isn't anyone with the same objects, I will just be more careful about bidding at my very highest amount, hoping that I get a deal.
As you can see, I did accept to buy the item even if I didn't like the second chance offer, because I really need that item. I paid right away with paypal, as I normally do, and as my 100% rating indicates. I just keep having some doubts about the whole thing.
Normally in an auction the amount goes higher and higher at the end but by small margins, say a 20$ price would go to 24, and then 28, then 31 etc.
When this happens with your auctions, there seems to be no interest in the auction, which sits low , then at the last second a big offer, equal to the suggested buy to price, is placed by one unknown person, then 2 minutes later we get a SCO at our highest bid price.