It'd have to fit me close to perfectly for me to spend $600. For that money, you can get a bike with decent, durable (although not top-of-the-line) components and reasonably good wheels. I mean, is this your primary means of transport, or something you'll ride a few hours on the weekend?
Just got back from a test ride. It's big, though not as bad as I thought it'd be, but when I'm on the bike, it's fine. They are going to put it on Craigslist if I don't take it and would ask 800 for it but it sounds like they'd sell it to me for $600. I think it would be tough to find anything at that price for this quality.