hard to give advice on prices without pictures. Also, it depends on the area you live in. I am in Seattle, and bought 2nd series 1955 6400 from Idaho (dry climate) for 500$. Almost no rust. When I got it home, I spent about an hour cleaning out the carb, fired it up and drove it off my trailer. My 58 6400, I spent 900$ on, it has some surface rust but not rusted out. It has a steel bed and a hydraulic lift on it. I put some fresh gas down the carb and a battery and drove it on my trailer. I have also looked at some more expensive ones but, passed on them. These big trucks are more expensive to build and run and in my opinion, there is not as bid of a demand for them as pickups.