Just received an e-mail from lemall.com. They are having a sale on 4/13/2016 to 4/14.2016 EST (48 hours) for the:
Letv X3-55 Pro 4K TV [lemall.com]
for $549 + Free Shipping
Letv Max3-65 4K TV [lemall.com]
for $699+ Free Shipping
Letv Box U3 [lemall.com]
for 69.99 + Free Shipping
Accessories are $30 off $50
These TVs are also 3D capable and includes 2 pairs of passive 3D glasses.
Their TV and set-top boxes come with 1 year subscriptions of their TV service, which includes mostly Chinese shows and movies.
Their promotion [lemall.com]
page (In Chinese, use google translate)
I have their 55" 4K TV from their last sale for $479. The TV works great except for some hdcp issues playing Hulu and Netflix using my nvidia shield. They did released a firmware that sort of fixed the problem. Also, you can side-load Kodi in these TVs and it works perfectly. No google play store though.