I would buy that bike. IMO (thinking like a seller) I wouldn't price it any lower. Why? Because, as it is, after haggling, sale price is going to be around $400 - $450. If I list it at a more buyer friendly price ... buyer is going to haggle anyway, now what? Assuming the fork is in good shape (recent carbon fork thread comes to mind) you have a decent bike on your hands. Google it. It gets great reviews. I personally prefer V-brakes and the only two bikes I ever bought with canti's I changed to V's from go. My preferred V's are Shimano LX-V's (on sale). OTOH the Giant another poster linked is a lot of bike for $500. The odd size tires will limit ultimate speed and tire choices but Giants have a lifetime frame warranty. You have to buy through an LBS and having a dealer relationship via a brand new bike IMO is worth it if you are not inclined to do your own wrenchin'.