ATM you can buy KFPLAN M602 RTR 1/8 for 400.99 USD (in Banggood). Just check coupons out (with price alert and history). Best price?
Latest coupon code price check (UTC time):
Banggood (400.99 USD)
Banggood warehouse is located in China. As you can see I didn’t find any active coupon for this product right now… Well, is it a good price anyway? Good news! This is great price, coz it’s the lowest in CouponsFromChina database!
Link: Banggood product page
Price: 400.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Aliexpress
Click here… to search for KFPLAN M602 RTR 1/8 2.4G 4WD 80km/h Brushless RC Car on Aliexpress
Here are coupons that you can use.
Price history and price alert
Check out price history chart (for all/most countries) for KFPLAN M602 RTR 1/8 2.4G 4WD 80km/h Brushless RC Car.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).