Aliexpress
Click here… to search for Xiaomi Purely LLLT Electric Laser Hair Comb 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 (96.55 USD): BG10OFFAFF1
(CouponsFromChina.com tip: 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
Old coupons (from the oldest to the newest): BG6619, bgshOOp10, BGHB20, BgoFErTaSchInA10, bGhOnEy10, BgcLuBofErtA10, BGAFF10OFF, BGCuponation10, 13f142, BGHONEY2110, BG10OFFAFF, BGwhielabel, 7bcdf9
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi Purely LLLT Electric Laser Hair Comb.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).