Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood.
Link: Banggood product page
Price: -3 USD
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGZD9104, AFfbG10, 502C6B, BGBFAFF2019, BGCITYADS2019, BGVDay10%off, 2880c7, BGAFF10OFF, BGTT10, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BGRC902, BgoFErTaSchInA10, BgcLuBofErtA10, BGCuponation10, 7bcdf9, BGHONEY2110, BGVehicle10, BGVehicles10, BG00c906, ADMITAD2212, BGCityadsRC
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for ZD Racing 9104 Thunder ZTX-10 RC Car KIT? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).