The market passed "$75 or $100" a while ago.

$60 is where things are at now:

http://orange.co.ke/smartphones_androids.html

$40 or $50 is the frontier:

http://www.pepstores.com/product/mtn-steppa/ http://memeburn.com/2014/02/huaweis-sub-70-smartphone-shows-...

$25 is the next wave.