When I was updating this page, then coupon price was 52.99 USD for RC Airplane (in Banggood). Just check coupons out (with price alert and history). Best price?
Latest coupon and price update (UTC):
Banggood (52.99 USD)
Banggood warehouse is located in China. I couldn’t find any coupon for this product on latest product update. The question is – is it a good price? From what I can see this price is higher than average price (44.99 USD).
Link: Banggood product page
Price: 52.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
There were country-specific coupon codes published on Couponsfromchina social channels and price alerts. Coupon price may vary by country, because there’re different VAT rates, shipping cost etc. There is a chance that some latest coupons are still working:
Old coupons (from the oldest to the newest): BG8FORMULAMX, BGPlane12
(there’s a little possibility that old coupon will work)
Aliexpress
Click here… to search for YF-350 Sea Land Air 290mm RC Airplane RTF on Aliexpress
Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for YF-350 Sea Land Air 290mm RC Airplane RTF.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).