Yeah, I would say it's a scam, man! I had almost the identical thing happen when I was bidding on an old 8Bit machine (Commodore SX-64). I really wanted it, but it WAS 20 years old or so, so I bid and was winning up to the last 5 min. Then the old scam happend...I bid twice more, then let it go. I got an email about 10 minutes after the auction ended saying that the winner retracted the bid and I could have it for the last price I bid. I refused. I don't believe a bid can be retracted in lest than 5 minutes before the end...I just took it as a sign of a scam and said so in my email back to him. What a cussing out I got in his return email. I just forwared it all to ebay and let them sort it out....
I can be depressing somtimes, but I have made some nice deals as well....
Buyer Beware!