Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. There is one coupon available! Pretty cool, huh?
Link: Banggood product page
Coupon (284.17 USD): BG5RCCar
(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): BGMatt2022, BG589b2e, BGAUGUST8, BGCAPITALOS8, BGCOUPERT8
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Price history (for all/most countries) for Pineal Model 1/8 Skelton King SG-801 Brushed RC Truck is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).