I cant beleive they are charging those amounts and that people are buying them.

I never liked the Texas Instruments sci calcs, I went for the Sharp el-5 series because I found them easier to use.
Ive always got a Sieko Pilot watch on my wrist and mostly carry an iPaq in my pocket.
You get some funny looks when you start calculating with the watch, especially from the 10 to 15 year old age group.