Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (82.40 USD): BGBK15
Coupon (82.40 USD): BGSMOFF
(CouponsFromChina.com tip: just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGBAK15, bGhOnEy10, BGSM15
(these coupons are old, so probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi Yunmi 1500W 6L Tank Electric Water Heater.
Price records source(s): Banggood
Click on image to enlarge.
You can set price alert (for Banggood).