Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. I’m not sure about the price, coz I have only 1 record(s) in my database.
Link: Banggood product page
Coupon (16.99 USD): BGb4bccb
Coupon (21.11 USD): BGSCM11
(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): BG49595d, BGbd883e, BGb715f5, BGCAR639
(these coupons are old, so probably won’t work)
Price history and price alert
There is only one database record (it was for 9.99 USD), so you can’t see price history chart.
You can set price alert (for Banggood).