I look at the sheet metal when considering a m715 or m725. Rust free...complete...running or not, 3500.00 dollars. Rusted missing body parts running or not,500.00 to 1200.00 dollars. As for as a good running take out engine complete...I'v paid 600.00 shipped to my home.
I like and have own several Kaiser trucks and I can safely say the stock motor is a maintenance nightmare, but I keep pouring money in to them. My current m715 engine came apart on the way to a fourth of July display Saturday so it looks like it will be parked for some time.