I have an opportunity to buy a 2006 LAND ROVER Range Rover Sport Supercharged for 32 000 from a private seller(not a dealer). It has about 20 000 mileage on it. Is it worth it or am I getting ripped off? Of course I will have it inspected have it's VIN history reviewed. I just do not know the value of this model because I see it range all the way up to 50K in price.