Picture #50 is what concerned me. The oil fill tube cap is gone, wiring looks to have been messed with, and the coolant degas looks empty. The ol'7.3 is rock solid (mine has 396,000) but as mentioned electrical gremlins, rubber tubes, and seals are becoming a problem.
My dad drives a f450, as long as its personally owned it dose not need DOT #'s or commercial license. I wouldnt spend much over starting bid on it, but knowing gov planet it will bring $3k.