Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (223.78 USD): 8Couponsde
Coupon (223.78 USD): MVC8SPRING
Coupon (223.78 USD): 8BGwbg2204
Coupon (226.21 USD): 2203ActiesNL
Coupon (228.65 USD): BGRCDrones6
(CouponsFromChina.com tip: you should apply the coupon in your 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): BG907MAX, BGCuponation10, BGSG907MAX, BGDAVIS, BG907MAXZB, BGff4c5f, BGc9dfc4, BGb1645a, BG6f02a9, Drones6, BANGGOODSD, CouponsDE, 00c906, ADMITAD2212, 2022ACTIESNL, Terence, Tabby20, BG1efeb0
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Here is price history (for all/most countries) for ZLL SG907 MAX Drone RTF with Bag 2 Batteries.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).