As it's been said, the prices are going to vary by mileage, condition, location, etc. One tip I will give you, don't be sucker and pay more for a car with mods. Mods do not add to the value of a vehicle and a good amount of modded vehicles are driven hard. The only way I would pay more for a vehicle with mods would be if it was a project car (not running) that someone had run out of money or whatever and has to sell it (because they wouldn't get the full value out of the mods, they haven't been used, and it would save me money in the long run).
That said, I paid $2400 for my car. It's a 2000 V6, 5speed, 98k miles, had a damaged front bumper, dent in the passenger rear quarter panel, paint damage on a few panels, needed tires, and some other minor things. And that was in Iowa in the fall (sports car prices tend to drop when winter is coming around and rise in the spring).