Unfortunately custom paint doesn't really add value ot sportbikes. It could even hurt the value (I know show bikes and Harley type bikes make be different). You also didn't mention miles, condition of tires, brakes, etc... For $5,000 it should be perfect b/c its on the high end of whats reasonable for a 5 year old 600cc bike. Somewhere between 4-5 sounds fair from what I have seen people in my area paying. But then again Im not in TN... Why not go to NADA and agree on a proce somewhere in between dealer retail and trade in.