Aliexpress
Click here… to search for Surpass Hobby 550 Brushed RC Motor 80A Set [EU] on Aliexpress
Here are coupons that you can use.
Latest price update (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…
Link: Banggood product page
Coupon (19.86 USD): BG716f9a
Coupon (24.82 USD): BGd79eb9
(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): BG3c9757
(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: 19.86 USD.
You can set price alert (for Banggood).