why are TI graphing calculators still so expensive

[Dave Britten]

(08-10-2016 04:49 PM)ndzied1 Wrote:  Old thread but my son's teacher just sent out an email suggesting he have a TI-89 for his class called multi variable calc. and diff. equ.

I found this little gem as well:
https://mic.com/articles/125829/your-old....3jVWw43pu

I couldn't convince him to take my Prime to class ... I'm sure the books all have examples w/ the TI-89 so I don't want him to be at a disadvantage...

The 89 is awful for day-to-day number crunching, due to heavy reliance on either using alpha keys to spell function names, or dig through weird menus to find them. If you need its functionality, go with a 92 Plus, or Voyage 200, since the OS was designed around having that QWERTY keyboard.