I bought two Sharp scientific calculators back in 1982 when I was in college. The Prof cautioned everyone to be sure to have two, because if one died during a timed trig exam you would be SOL.
I used both of them daily in my work and at home for 26 years before either one needed a battery!
I had to replace the battery in one of them a few months ago. I changed both batteries and should be good to go for another 25 years. I think I paid about $15 ea at the time.
Not all Sharp products are a bad deal.
I think there may have been a sharp product around the house, but I’ve never bought any myself. I get by.
They got more than one chance, they got several.