I need too know how much this quad is worth i am looking at it and need to know what you think..

2000 Honda 400EX some scratches on the plastic, it has works shocks up front, k and n power kit and filter, big gun exhaust, six pack rack, Fly Handlebars, kill switch, dg alloy nerf bars, maxxis razor rear tires, and full skids, It runs perfect, looks new...
please help me just give me what you think is a fair price for it. and if you can please give me some pointers on what too look for, i know i have another post up, but i thought maybe with this list of mods, the tips might change

 

i would say about $4500 give or take