I found the Holy Grail in a computer thrift shop but they wont sell it
to me because they do not know what it is worth and they think it is a
lot.
A nice HP 9100, fairly clean, some stickers, and complete. Not been
fired up and I told them not too.
I offered the $60 as it was all I had and they wouldn't take it. I
think they are going to want a lot more. So the question is what is a
reasonable price for the holy grail sitting on a shelf.
I wouldn't call it the 'holy grail'. They're actually not _that_ rare (I
can think of other HP calculators/computers that are significantly harder
to find) , but of course they wer e the first HP electronic calculator
[1], and as such have considerable 'collector' interest
[1] A standing joke among HP calculator enthusiasts is to ask 'What was
the first HP calculator'. Handheld fanatics answer 'HP35', those who
consider the desktop say' HP9100A', while those who realise it's a trick
question answer 'That relfection coefficient slide rule that came with
some of the RF test gear' :-)
Anyway, is this machine a -A or a -B? THe formse, being the first, is
more valuable (and rarer). I've seen -As sell for over $1000, I would
think a -B was worth around half that. That assumes the machine is
repairable (all PCBs present, no physical damage, CRT good, and so on).
Be warned that repairing one of thse machines is not that easy, the logic
circutis _and_ the architecture are both very unconventional.
-tony