Aliexpress
Click here… to search for Xiaomi WAKEUP H300 Manual Razor Set on Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. There is one coupon right now! Check this out.
Link: Banggood product page
Coupon (30.19 USD): 13f142
(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): 502C6B, 59c904, vipupgrade8, TTxBG10, bGhOnEy10, BGAFF10OFF, BGdragonBoat, BGSS10%SW, BGCuponation10
(probably won’t work, but you can try them out)
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi WAKEUP H300 Manual Razor Set.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).