Calculators you regret not buying?

[jthole]

About the 35s, I tried one for a while when they were still readibly available, and I wasn't convinced that I wanted to use it longer term. So I sold it again, for the same price. Of course I didn't know how prices would skyrocket.

I somewhat regret not having bought any of the RPL graphical calculators when they were still readily available. OTOH, I found them bulky and expensive (and overkill for me) back then. So probably that would still be the case (even more now).