Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. Uhm… There’s no price history (in my database) for this product right now.
Link: Banggood product page
Coupon (32.09 USD): BGET10
Coupon (33.52 USD): BG589b2e
(CouponsFromChina.com tip: 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
Old coupons (from the oldest to the newest): BG16de83, BG20236Tool
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
It doesn’t make sense to generate price history chart, because there is one price record which is: 25.99 USD.
You can set price alert (for Banggood).