According to my DB the lowest price is $54.99 for KFPLAN KF603 Sea Land Air 255mm 2.4GHz 3CH RC Airplane Glider RTF with 3 Batteries (in Banggood). Basically copy coupon, view price history or create e-mail price alert. Do you want to know what the best price is?
Latest price update (UTC time):
KFPLAN KF603 Sea Land Air 255mm Wingspan 2.4GHz 3CH Built-in 6-Axis Gyro EPP RC Airplane Glider RTF
Banggood ($54.99)
Banggood warehouse is located in China. As you can see I didn’t find any active coupon for this product right now… Isn’t it too expensive? This price is higher than average price ($50.49) for this item.
Link: Banggood product page
Price: $54.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
There were country-specific coupon codes published on Couponsfromchina social channels and price alerts. Coupon price may vary by country, because there’re different VAT rates, shipping cost etc. There is a chance that some latest coupons are still working:
Old coupons (from the oldest to the newest): BGPlane12, BG417f11, BGcd1081
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – KFPLAN KF603 Sea Land Air 255mm 2.4GHz 3CH RC Airplane Glider RTF with 3 Batteries [EU] ($-3)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Check out price history chart (for all/most countries) for KFPLAN KF603 Sea Land Air 255mm 2.4GHz 3CH RC Airplane Glider RTF with 3 Batteries.
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)).