If that's showing, imagine what you can't see!
Have you seen this excellent checklist?http://eagles-international.net/forums/viewtopic.php?f=5&t=4343
Why this one is it the price?
That looks likes Doyles 05 in El Paso
The rust is not bad (as pictured), the main concern is the rusted bottom tube in the front supporting the Torsilastic tube. If you are weak on welding skills, then it might not be for you.
If Clifford says that's a good bus you should just stop reading and write the cheque.