Aliexpress
Click here… to search for Xiaomi ZMI 10000mAh WBP01 Power Bank 22.5W Wireless Charger on Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. One coupon is available. Cool!
Link: Banggood product page
Coupon (44.17 USD): BGCCARG
(CouponsFromChina.com tip: 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
Old coupons (from the oldest to the newest): BGZMIGreen, bgshOOp10, BGAFF10OFF, BgoFErTaSchInA10, BgcLuBofErtA10, BG11ZMI10000, BG15POWERBANK, BGCuponation10, 13f142, BGHONEY2110, BANGGOODSD, 6GSGIT
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Price history (for all/most countries) for Xiaomi ZMI 10000mAh WBP01 Power Bank 22.5W Wireless Charger is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).