Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Racerstar RS20Ax4 20A RC ESC (-3 USD)
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 (41.47 USD): ADMITAD2212
Coupon (41.91 USD): BG00c906
(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): aff7off, rchobbies8, 12racerstar, e2bcea, 19NY, 502C6B, RS20A4, TTxBG10, bgssaff9, AFfbG10, BGGEPPart, BG20RC, 0e7f33, FBCOUPON1, BGAFF10OFF, BGCuponation10, BGDAVIS, BGHONEY2110, Parts8, 13f142, 00c906, BGGAL8, BGRCParts8, 8BGwbg2204
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Racerstar RS20Ax4 20A RC ESC (-3 USD)
Price history and price alert
It doesn’t make sense to generate price history chart, because there is one price record which is: 23.99 USD.
You can set price alert (for Banggood).