Product dimensions: 160*80*35mm, Materials: Aluminum + ABS, Fan dimensions: 70*70*15mm, Fan discription: DC5V / 0.2A / 2400rpm, Compliant with: 5 to 7.5 inch Mobile phone, Built in rechargeable battery 5 and free cable, Model: G50.
Price history, coupons and price alert are available on this page. Best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
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. ($15.22): BG00c906
just apply this code 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/i1u
Old coupons (from the oldest to the newest): BGZY329, 13f142, BANGGOODSD, BGDAFG50, BGDAR50, BGef96eb, 2022ACTIESNL, Terence, Tabby20, 2203ActiesNL, MVC8SPRING, 8BGwbg2204, tRaDetRaCKeR, pROMo8cuPoN, BGJUNEGSG9, TTSUMMER8, Cuponation9
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Check out price history chart (for all/most countries) for DarkFlash G50 Aluminum Mobile Phone Cooler. The lowest price was: $9.99.
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)).