Strange bidding on ebay auctions

I had bid on a 5 piece set of 2003 pr69dcams and the winning bid was over $100. I looked at the winnng bidder and it gets wierd. The only other bid he won was against the same bidder as the 2003 proofs. Here are the auction links. Also read his feedback.
auction 1
auction 2
auction 1
auction 2
When I was a child, I caught a fleeting glimpse
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My ebay auctions
The seller has now established a non-zero FB posting id (many would call it a trolling id). He can use this id in various ways - the scenarios get complicated, and are not necessarily nefarious. If he had wanted to establish a non-zero FB buying/selling id, he would NOT have responded with a sarcastic remark to his own positive feedback. He would have simply used every occasion to snipe a low-bidding auction for its FB potential, and created a mock "legit" id. A "mock legit" id is usually used for fradulent activities.
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