Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in Europe 
. I don’t want to misguide you about the price. I don’t know if it’s good, because I don’t have enough records in my database… We have found one coupon for this product!
Link: Banggood product page
Coupon (7.99 USD): BG3785f5
(CouponsFromChina.com tip: put item in your cart and apply coupon code there 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): Cuponation9
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
There is only one database record (it was for 7.99 USD), so you can’t see price history chart.
You can set price alert (for Banggood).