Pricing
People complaining about the price of this thing need to think a little bit about economies of scale. This is the reason that even the cheapest smartphones are now 5" plus and use many common components. Making something this far outside of "normal" costs more. It's simple economics - smaller does not mean cheaper.
BTW - I used one of these briefly a few weeks ago and it's cute but a bit of a gimmick in my view.
Biting the hand that feeds IT
