I was wondering what an 07 yfz450 is worth? I found one on craigslist for 4500, it has a curtis sparks racing exhaust, K&N pro flow kit, new ITP holeshot tires HD, 6 pack rack, new Huller paddle tires, and a 5 year extended warranty. The color is grey plastics with a red frame. Any advice would be greatly appreciated. It looks nice ion the pictures, just want to make sure I am not getting ripped off before I make a 2.5 hour drive to Phoenix,Az.