I sold that exact same bike with a couple upgrades, and in very good shape for 350 and that was almost a year ago. Try to get it for $300. That would be very reasonable. If it was barely ridden, and i do mean barely. You could go to $325. But do not pay more than that period!!!
One other thing about that bike, it is a tank, and I mean that in a good way I now wish i would of just held on to mine as a beater backup bike. But times are tough, wanted better,couldn't afford to have both.