Xiaomi MSN T3 Electric Hair Shaver Razor (Banggood, Aliexpress: Product name MSN Multi-purpose Electric Hair Shaver Trimmer, Net weight about 70g, Battery capacity 800mAh nimh battery, Product size 155.5mmx 32.8mmx 26.3mm, Product model T3, Power 3W, white, Product color Black, Package size 187mmx 82mmx 48mm, Charging time 8 hours (the best price with coupon)).
You can create price alert here, copy coupons and view price 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 coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. I found coupon for you. Check this out.
Link: Banggood product page
1. ($44.17): BGHealth06
just apply this code in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG2MSN, BG9922, BGMSN22, BGHHH2, BGMMSN2, BGBN2, BGOMG23, BGMNS2199, BG2MFC, BGSHB7, bGhOnEy10, bgshOOp10, BGMSN15, BGHB20, BgoFErTaSchInA10, BG11716, BgcLuBofErtA10, 13f142, BGCuponation10, BG10OFFAFF, BGwhielabel, BGMUML915, BGSOOCAS5, BG10OFFAFF1, BANGGOODSD
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Xiaomi MSN T3 Electric Hair Shaver Razor [EU] ($-3)
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi MSN T3 Electric Hair Shaver Razor. The lowest price was: $14.99.
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)).