Yeah, but it's a whole lot of fun. I'm still learning myself, but I recently made the jump to full suspension after riding hardtails for quite a few years. I was able to pick up a 2005 Giant Trance that was only ridden 12 miles before I got it. It cost me 500, but if you're serious about this purchase it is almost worth waiting for a deal like that. If that Diamondback was like 150 I would say jump on it. But it is just old enough, and just expensive enough to make it a questionable decision. You could always offer less than hes asking if it is really something you want.