Right now the best price with coupon code for TENGOO HV-04B Heating Vest is $27.99 (in Banggood). Basically copy coupon, view price history or create e-mail price alert. Do you want to know what the best price is?
TENGOO HV-04B Unisex 4 Places Heating Vest 3-Gears Heated Jackets USB Electric Thermal Clothing Winter Warm Vest Outdoor Heat Coat Clothing – 6XL
Latest coupon code price check (UTC time):
Banggood ($27.99)
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database. Is it expensive? Well, this price is higher than average price ($17.74)
Link: Banggood product page
Price: $27.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for TENGOO HV-04B Heating Vest 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)).