Prices seem to depend on where you live alot and if someone is willing to pay extra for a rust free and very clean car.

I decent lower mileage car in my parts is around 3-5k and 7-9k for a newer body style but mainly the GXP package cars.

I'd still figure around the $4,000-4,500 mark for a pretty nice car. Start you price higher and see if anyone is willing to come close to what you are willing to take. Someone might bite and pay a little extra.