Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (27.91 USD): BG369ad9
Coupon (54.64 USD): BGToys8
(CouponsFromChina.com tip: this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
There were country-specific coupon codes published on Couponsfromchina social channels and price alerts. Coupon price may vary by country, because there’re different VAT rates, shipping cost etc. There is a chance that some latest coupons are still working:
Old coupons (from the oldest to the newest): TTBLACK5
(probably won’t work, but you can try them out)
Price history and price alert
Do you need price history chart (for all/most countries) for CV-A600-2 1/10 2.4G 4WD RC Stunt Car Gesture Sensor? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).