You can create price alert here, copy coupons and view price history. 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 and price update (UTC):
Rated Frequency 50Hz/60Hz, Material ABS, Hand Warmer Energy 8000KJ, Rated Voltage 85-265V, Color Pink, Hand Warmer Size 70*27.5mm, Rated Power 400W, Hand Warmer Weight 80g, Product Size 144*148*128mm, Product Weight 485g
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($26.74): BGHOMEA13
2. ($27.73): BGAFF10OFF
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): d8414b, Hardware, TTxBG10, aff7off, bgssaff9, AFfbG10, BGhardware, BG2756, BG2020NS, BG6390, BGMPB2020, bGhOnEy10, BGdragonBoat, bgshOOp10, BGHWDEALS, BgoFErTaSchInA10, BgcLuBofErtA10, BGHap20
(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 Happy Life Detachable Hand Warmer Pink is here.
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)).