Bob wrote....
They are quite common, and very affordable. You can
be up and running an
HP
mini with far less cost and trouble than a 'more desirable' PDP-8 or
PDP-11.
Depends on what your definition is of affordable!! A 21MX E is cheap &
common, I'd say they can easily be found sub $100. F's slightly less so,
more like $150. M's are almost never found anymore, no telling what one
would go for (but I'm about ready to find out). And have you seen what 2100A
or S machines go for? I've seen anywhere from $750 to $1500. 2116's seem to
go around $650 too.
Jay