I have checked all old coupons and price is 18.99 USD for For XRAY (in Banggood). Just check coupons out (with price alert and history). You probably want to know what is the best price?
Latest coupon code price check (UTC time):
Banggood (18.99 USD)
Banggood warehouse is located in China. I can’t find any active coupons for this product in Banggood. I think you want to know if the price is good. From what I can see this price is higher than average price (17.15 USD).
Link: Banggood product page
Price: 18.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGToys8, BGMatt2022, BG589b2e
(I don’t think these’re gonna work, but you can try ’em out anyway)
Aliexpress
Here are coupons that you can use.
Price history and price alert
Check out price history chart (for all/most countries) for 4Pcs Tires Wheels 12mm Hex for XRAY XB2 DIRT SRX2 SRX4 Bandit Tekno EB410 YZ4 RC Car.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).