Xiaomi Soocas ET2 Electric Shaver (Banggood, Aliexpress: Product size 146mm * 33.2mm * 23.2mm, Waterproof rating IPX7, Life time 60 minutes, Input parameters 5V == 1A, Charging time 120 minutes, Rated power 1W, Charging method TYPE-C interface charging (the best price with coupon)).
Just check coupons out (with price alert and history). You probably want to know what is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
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. Well, there is one coupon available right now.
Link: Banggood product page
1. ($44.96): BGHealth06
paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG2Soocas, vipupgrade8, BG9922, BGIRG36, AFfbG10, BGIFJM12, BGRAZRA, BG0CS2, BGET2RA, BG2D2, BGETRA, BGSOOCAS18, BG4514, BGETMRA, BG2HOT, BGSHB7, BGNZSCRU, BGSOOCA2, bGhOnEy10, BG11025, BGSJHome42, BGHome15%, BGSepPro30, BGOOZAJP, BGHALLOWEEN, BGHOMEA15%, BgcLuBofErtA10, BGNKI45, 13f142, BGCuponation10, BGHONEY2110, BG10OFFAFF, BGwhielabel, BG10OFFAFF1, BANGGOODSD
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Price history (for all/most countries) for Xiaomi Soocas ET2 Electric Shaver is here. The lowest price was: $20.99.
Price records source(s): 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)).