Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in Europe 
. Sorry, but there’s no price history in my database.
Link: Banggood product page
Coupon (20.92 USD): Cuponation9
Coupon (21.15 USD): BG8ReviTrage
Coupon (21.61 USD): BG00c906
(CouponsFromChina.com tip: this code has to be applied in your cart 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): BGe46870, BG7280ff, Tabby20, BG1efeb0, MVC8SPRING, 8BGwbg2204, 2203ActiesNL, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, BGJUNEGSG9
(probably won’t work, but you can try them out)
Price history and price alert
Well, you won’t see price history chart, coz we have only 1 database record for this item (and price was 14.99 USD).
You can set price alert (for Banggood).