How much could I sell my Infiniti g35 for?

[Globalfuckup]

I have a 06 Infiniti g35 automatic, black on black, wear and tear on driver side but passenger and rest in car is practically brand new. Milage of 64k and a repaired left from bumper(a truck reversed into me and broke the headlight cover and damaged the bumper) an estimate price of resale would be good or a trade in estimate from audi and any other Japanese/European car comapanys lower then audis price