Ask HN: Strange: Why haven't TI graphing calculators dropped in price?

Why is a (graphing) calculator necessary to learn calculus?

A brand new TI (or HP) calculator might have a 150 MHz processor and 20 MB of user-accessible storage space, which is quite a bit better than the 6 MHz / 28 KB from my 18 year old TI-85. By Moore's law, we'd expect 9 doublings in that time period, which is almost exactly what we get in terms of storage. It's harder to judge the jump in CPU capabilities (not everything can be measured by clock speed), but we're no more than a couple of doublings away from what Moore's law would predict.

Graphing calculators are probably also overpriced, but that's not a matter of Moore's law, it's a matter of market inefficiencies and lockin.