Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 2 another warehouse/versions!
1. China – Xiaomi One Cloud Slippers Royal Blue (-3 USD)
2. China – Xiaomi One Cloud Slippers Black 280mm (-3 USD)
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. Only one coupon available!
Link: Banggood product page
Coupon (12.74 USD): 502C6B
(CouponsFromChina.com tip: apply code in your basket (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): XMBS823, AFfbG10
(these coupons are old, so probably won’t work)
Other warehouses/versions
This item is available in 2 another warehouse/versions!
1. China – Xiaomi One Cloud Slippers Royal Blue (-3 USD)
2. China – Xiaomi One Cloud Slippers Black 280mm (-3 USD)
Price history and price alert
Here is price history (for all/most countries) for Xiaomi One Cloud Slippers Coral Blue.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).