Aliexpress
Click here… to search for TOPRC Lightning V2 1500mm EPO Glider RC Airplane PNP on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (172.89 USD): Cuponation9
Coupon (174.79 USD): hoNEYbGdeAlS
Coupon (174.79 USD): BG8ReviTrage
(CouponsFromChina.com tip: apply code in your basket (cart) after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): 2022ACTIESNL, Terence, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, BG8RCToy, BGJUNEGSG9, BGRCT10
(these coupons are old, so probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for TOPRC Lightning V2 1500mm EPO Glider RC Airplane PNP.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).