Just check coupons out (with price alert and history). What is best price?
MIUI 8 3GB RAM Snapdragon 820 64bit Quad Core 2.15GHz Fingerprint Sensor 16.0MP + 4.0MP Cameras Type-C Quick Charge 3.0 NFC Front Fingerprint Sensor
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Price history and price alert
It doesn’t make sense to generate price history chart, because there is one price record which is: $222.21.
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).