Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (55.25 USD): 8Couponsde
Coupon (55.85 USD): Terence
Coupon (55.85 USD): 2203ActiesNL
Coupon (56.45 USD): BG00c906
(CouponsFromChina.com tip: put item in your cart and apply coupon code there 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): BGSTHO15, BGHONEY2110, BGSHOM15, 13f142, BG10OFFAFF1, 6GSGIT, 00c906, ADMITAD2212, 2022ACTIESNL, Tabby20, BG1efeb0
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Price history (for all/most countries) for Xiaomi HY Sterilization Shoes Dryer is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).