It's a Trek 6700. From a little searching, I think it's an 08 model. Says it has upgraded brakes. Asking $650.

The bike is a 15.5" frame, and I'm ~5'7". I think that's a good fit, but the ad said good for someone 5'9"-5'10". What do you guys think? It also said it's a good bike for someone weighing less that 140lbs. Sounds off to me, but maybe I'm crazy? I wouldn't think there are many who are 5'10" and weigh under 140lbs anyway. I'm 3" less, 10lbs more, and I'm fairly thin.

Does this sound like a decent first bike at a decent price?

Or should I perhaps stick to a new bike?