Nanovision MIMO 720-S Mini Touchscreen

"Back when we reviewed the first Nanovision MIMO USB monitors, the UM-710 and UM-730, we wondered whether price and niche appeal would see them a passing fad. The proliferation of roughly 7-inch USB display rivals in the intervening months would seem to suggest that fear was unfounded, and indeed Nanovision are back with their second generation of companion monitors. Now narrowed down to two units – the basic MIMO 710-S and the touchscreen MIMO 720-S – we’ve had the finger-friendly model on our desk for the past week."

Neat and potentially useful for both the desktop and as a portable, but at $230, I don't see the killer functionality.  This needs to be sub $100.