Calculators you regret buying?

[Eddie W. Shore]

The closest purchases to regrets that I have are:

The HP 49g+ (gold - early edition), TI-57 LCD, and TI-54, as they all have horrible keyboards.

I had a folding Casio programmable, I think it was the fx-795p, the battery just never lasted long.

There was one made by CVS long ago, it was a clone of the fx-300ms, but the keys were out of order and some functions were misspelled.