Looking through the listing of available items in the shop category I found one prize (to me at least). A Moore Jib Bore rig. Had the to train on one at school for the Tool & Die classes. Those are largely replace by the CNC mills now.
From what I could see I would have to agree that these being from the schools, I'd agree that they are probably in ruff shape. Just how ruff is the question. They might be nice to a small hobby shop or such. Or as Nickel said for small precision work easier done then on a full sized mill.
Though I wonder if you'd find this recent addition to the Grizzly line you'd find functional Nickel.