HP 9100A query

[Jurgen Keller]

(02-20-2023 05:30 PM)toml_12953 Wrote:  

(02-20-2023 06:40 AM)HP-12C Wrote:  How rare is the Hewlett-Packard 9100A calculator these days?

What sort of value do these units command when they do come up for sale?

On "The Auction-Site-That-Must-Not-Be-Named" (OK, eBay) a working one can go for around $3000 - $4000 USD depending on who's looking for one. The B model can go slightly higher.

It surprises me that the B model can go higher than the A model. I think the A is more difficult to find. Any idea why? Maybe because of additional functions?