Aliexpress
Click here… to search for Xiaomi ST-W481 IPX7 Electric Shaver on 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 (56.69 USD): BGHONEY2110
Coupon (61.99 USD): 13f142
(CouponsFromChina.com tip: just apply this code 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): healthylifestyle, HHHHHOT, vipupgrade8, 20%OFFSUMMER, ML15%Pro, BGSMS0, BGHC715, 502C6B, BGBFHC19, bgshOOp10, bGhOnEy10, BGHB20, BgoFErTaSchInA10, BgcLuBofErtA10, BGAFF10OFF, 7d18f7, BGCuponation10
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi ST-W481 IPX7 Electric Shaver.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).