"We've got quite a few sets of eyes and ears sensitive to looking for minis
on this list, not just micros --including folks with close connections to
scrappers-- and there are relatively few alerts raised as to 780 or 750
(and other big iron mini) availabilities vs. your contention many types are
common.
"
A friend of mine in Milwaukee has an 11/780 he'd like to sell, if anyone
near there wants it. It will be a non-trivial de install, though (it's in
a basement).
If someone is serious about this, I can forward his phone number / email adr.