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 (115.93 USD): Cuponation9
Coupon (115.93 USD): BgGoodie9
(CouponsFromChina.com tip: you should apply the coupon 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): BGAGDWSFT, 13f142, BGCuponation10, BG10OFFAFF, BGwhielabel, BG1d53cd, BG10OFFAFF1, 6GSGIT, 00c906, BGHYB22, BGAHPU13
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Price history (for all/most countries) for AUGIENB 220V 550W Electric Water Dispenser is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).