Just what is a Private Auction? I've been buying and selling on eBay for many years and never heard of that before. Anyway, that is a nice machine, but I do think the seller is dreaming on that price. I have heard of some going in the range of $500.00, but this one is way over priced. I would say, that the one I have is almost as nice and I didn't pay anywhere near that price for mine.
The seller needs more than luck to sell it for that price.