Chuwi’s Hi10 Windows 10 64bit version is now in stock at Banggood.com, according to them this is now the second batch with the corrected 64bit Windows 10 image and not the first release 32bit one. So you get the full 4GB of RAM and you’re not limited to 32bit apps and only 2.9GB usable RAM like the first one.
Banggood’s price is $189, $169.25 with coupon 3F3128 (7% off)