It's also worth noting that if or when they ship a larger iPhone, that's going to directly cannibalise iPad mini sales.
Blu is actually US based (Florida) and Yezz is also apparently going to sell into the US via Amazon.
Microsoft are already working around the 30% cut on app store sales by offering it as a free app to office 365 subscribers.
"But Barnes & Noble has made a Nook app available on all major mobile platforms, so customers can continue to access their content on other devices."
...excluding Windows Phone 8.