Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (135.99 USD): BG3cc26d
Coupon (156.39 USD): BGMatt2022
Coupon (156.39 USD): BGToys8
(CouponsFromChina.com tip: coupon code has to be applied in shop’s 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): BGRCTRF, Cuponation9, BgGoodie9, BGGutscheine
(these coupons are old, so probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for SINOHOBBY MINI-Q TRF-S02/TRF-G02 RTR 1/28 AWD FPV RC Car.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).