whats my X5 worth

[Black 01 X5]

Hey Guys, Im still a newbie here, own a 2001 X5 3.0 that I purchaed in March 2010 from original owner with 90k miles. It now has 136k miles and is always garaged and meticulously maintained. I was hoping someone could tell me what a fair price to sell it for would be. I paid $12,900 for it two years ago as I mentioned with 90k miles. It drives great, so far have had to replace alternator, coils, plugs, MAF, rotors, pads, and three window regulators. It now needs a left front cv joint, have both sides already. Also needs rear alignment ajusted for camber, as since I switched to 18" wheels, the past few months its been wearing the rear tires on the insides all the way around where you can see the white tread and wire belts come out. Paint is excellent aside from normal road debris marks on front end, and no dents or dings, and clean interior and upgraded to all weather floor mats so carpet is like new still. Im not a premium member so I cant post it for sale here, but just thought I would get some of your opinions as what to ask for it. Dont want to trade it in, or I would get not much for it. I was hoping to get at leat $9k for it.

Thanks

Dan