Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
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 (26.34 USD): BGLMQ15
Coupon (27.27 USD): BGSCM11
(CouponsFromChina.com tip: paste coupon code in your cart and click Apply 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): BGCarAud4, BG845979
(these coupons are old, so 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: 25.19 USD.
You can set price alert (for Banggood).