You can create price alert here, copy coupons and view price history. What is best price?
Item No: 9203, blue and green, 4.All metal steel drive shaft, Channel: 2CH, width 48mm, Hub inner diameter 82mm, Total gear ratio: 9.9: 1, hexagonal adapter 17mm, 1.Aluminum alloy 6061CNC precision machining chassis, Remote Distance: ≤150m Car Battery: 7.4V 4000mAh Lipo battery(included), Brand: ZD Racing, Tread: 210mm, gear, Car Wheels: , Wheelbase: 325mm, 3.Full metal CNC precision machining steering cup, diameter: 112mm, Box Size: 62*33*21cm, rear axle seat, Max Speed: 80km/h ESC: Brushless sensorless 120A esc, Frequency: 2.4G, Car Size: 590*310*200mm, Servo: 15kg high torque servo, 2.All metal oil pressure adjustable shock absorber, Color: Black, Scale: 1/8, Motor: Brushless sensorless KB4274 2200KV, Chassis height: 40mm
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. 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
1. ($325.70): BGVehicle10
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 and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGZD9203, AFfbG10, Wholesale20, BGVDay10%off, bGhOnEy10, BGAFF10OFF, BGdragonBoat, BGSS10%SW, bgshOOp10, BGRC902, BgoFErTaSchInA10, BgcLuBofErtA10, BGCuponation10, BGDAVIS, BGHONEY2110
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for ZD Racing 9203 RC Car RTR.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).