Aliexpress
Click here… to search for Xiaomi LEGA Graphene Hot Compress Neckband on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. One coupon is available. Cool!
Link: Banggood product page
Coupon (62.36 USD): BG10OFFAFF1
(CouponsFromChina.com tip: put item in your cart and apply coupon code there 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): BGAFF10OFF, BGNH52, BGCuponation10, 13f142, BG10OFFAFF, BGwhielabel
(these coupons are old, so probably won’t work)
Price history and price alert
Do you need price history chart (for all/most countries) for Xiaomi LEGA Graphene Hot Compress Neckband? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).