Basically copy coupon, view price history or create e-mail price alert. Best price?
One set of aluminum heatsink (3pcs)
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
3PCS One Set Aluminum Heatsink Cooler Adhesive Kit for Cool Raspberry Pi | $0.23 | – |
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. You can get coupon down below.
Link: Banggood product page
1. ($8.64): BG589b2e
apply it 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): BGd0b05d, BG2589f4, 00c906, BG00c906, ADMITAD2212, 2022ACTIESNL, Terence, Tabby20, 2203ActiesNL, BG1efeb0, 8Couponsde, MVC8SPRING, BGJUNEGSG9, Cuponation9
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Price history (for all/most countries) for 3pcs Adhesive Aluminum Heat Sink Raspberry Pi Cooler 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)).