The same person is selling a 1989 All American 40 footer with an 8.3 Cummins for $4500. TC2K's do seem to rust pretty bad up here. Actually, I was riding the bus to school one day when the plastic rear wheel tub just up and fell out from under my feet.
That one doesn't seem to have to typical rust, however.
If someone were seriously considering it I would be willing to go take a look and snap some pictures for them.