Xiaomi Redmi K20 Pro 6/64GB Black (Banggood, Aliexpress: E-compass, GPU: Adreno 640, AMOLED full screen, accelerometer, CPU: Snapdragon 855 Octa Core 2.84GHz, System: MIUI 10, SIM Card: Nano SIM + Nano SIM, Display: 6.39 inch FHD + 403 PPI Corning Gorilla Glass, ambient light sensor, Sensor: proximity sensor, GLONASS: G1, Beidou: B1, camera laser focus sensor, Galileo: E1 + E5a, Bluetooth: 5.0, Camera: 48.0MP + 13.0MP + 8.0MP rear camera + 20MP front camera, RAM + ROM: 6GB RAM 64GB ROM, Feature: GPS: L1 + L5, gyroscope (the best price with coupon)).
Just check coupons out (with price alert and history). What is the best price?
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):
Banggood
Banggood warehouse is located in China. Only one coupon available!
Link: Banggood product page
1. ($359.99): BGBFAFF2019
this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG7K20P6, aff7off
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for Xiaomi Redmi K20 Pro 6/64GB Black? There we go. The lowest price was: $359.99.
Price records source(s): Gearbest, Banggood
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)).