IPX7 waterproof, Double-ring blade, Stainless steel cutting head, 360-degree cutting movement, Charge for 8 hours and run for 45 minutes, Built-in 2x 450mAh lithium battery.
Just check coupons out (with price alert and history). Let’s see what best price is ATM.
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. I found coupon for you. Check this out.
Link: Banggood product page
1. ($20.46): vipupgrade8
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): EnlightyOurlife, HHHHHOT, healthylifestyle, 8046b1, 04bd3b, MISHAVE, MS567, 20%OFFSUMMER, BGMISHAVE, ML15%Pro, BGS1669, BGZBMS0, BGHC715
(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 Mi Home Men Electric Razor. The lowest price was: $14.49.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).