A few years ago, I bought a talking calculator from either Independent 
Living Aids or Adaptations, which is the store for the San Francisco 
Lighthouse for the Blind. I don't remember the brand or the price, but I 
remember thinking it was way, way cheaper than I expected. It's roughly  
the size of an iPhone or Victor Stream, and it runs on two tripple-A 
batteries, which I change maybe once a year. I think it's technically 
always on: what I think of as the On button is actually a Talk button, 
and if I slide that switch even farther to the right, it talks louder. 
The functions are pretty basic, probably comparable to the Sharp.

Here's the Talking Calculator page for ILA:
http://www.independentliving.com/products.asp?dept=72

And the one I have sounds like the Pocket Size Talking Calculator 
(Black)--Item #: 276974.

Hope this helps.


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