Our company sold our rusty 05 Duramax extended cab 3/4 ton 4x4 by tender. It had 350,000 km on it, I bet it went for close to 10K. They could not tell us the amount, only that it went for a lot more than 5K. Dealer valued it at 6K. They were probably hoping our company would bite and put a 10K price tag on it, once traded in. My co workers very rusty, barely any fenders left, 07 Chevy extended cab 1/2 ton 4x4 with a 5.3 200,000 km, he sold it for 6K!