Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in Europe 
. I can’t tell you if this price is good – not enough records in my database, so I won’t judge. Only one coupon available!
Link: Banggood product page
Coupon (65.69 USD): BGGines
(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): BGa9475b, BGPTL088, BG6d2f05, BGTools8
(you can check these old coupons out, but these probably won’t work)
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 50.36 USD).
You can set price alert (for Banggood).