SR-56C? Interesting idea.

[pauln]

That's an interesting question. What was the price difference between the TI-58 and the TI-58C in 1979, when the TI-58C was introduced?

I believe that, in 1977, the TI-58 was around $130. By the way, to me, that was a great value compared to the $80 for the TI-57.

I'm looking at HP-25 vs HP-25c:
* https://www.rskey.org/hp25
* https://www.rskey.org/hp25c

According to rskey, the price, when introduced, was essentially the same. But of course, the continuous version came the following year. By extrapolating, it seems to me that TI could have made a 56C for not much more than a 56, but it would have made the 52 less desirable than it was.