How much is my car worth?

im in a bit of a bind. i need to sell my car. fast. im trying to find out what a real consumer might be willing to pay for my car. its a 2002 cadillac escalade. its a beautiful car. pearl white. 22s. everything has been replaced.new brakes,new suspension.new transmission.interior is PERFECT. leather is in showroom shape. carpet is perfect. ect. car has no problems except dvd player doesnt read disks. downside to the car. it has 172k miles on it. whats the value of something like this. btw its a base 2wd with a 5.3 car was $50,385.00 back in 02