Xiaomi Mi5X 4/32GB Golden (Banggood, Aliexpress: 5.5 inch MIUI 8 Snapdragon 625 2.0GHz Octa Core 4GB RAM 32GB ROM 3080mAh Battery Dual 12.0MP Zoom Lens Touch Sensor (the best price with coupon)).
Basically copy coupon, view price history or create e-mail price alert. Do you want to know what the best price is?
Aliexpress
I could not find it 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
Do you need price history chart (for all/most countries) for Xiaomi Mi5X 4/32GB Golden? There we go. The lowest price was: $159.99.
Price records source(s): Gearbest
Click on image to enlarge. 
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)).