Xiaomi Redmi 4X 3/32GB Black [HK] (Banggood, Aliexpress: 3GB RAM 32GB ROM BLACK, International Version MIUI 8 Snapdragon 435 4100mAh Battery (the best price with coupon)).
Basically copy coupon, view price history or create e-mail price alert. Best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Price history and price alert
There is only one database record (it was for $-1), so you can’t see price history chart.
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)).