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 (189.30 USD): BGAFF10OFF
Coupon (189.30 USD): BG10RACING
(CouponsFromChina.com tip: just apply this code 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): BGND75HD, AFfbG10, 502C6B, BGBFCR25, BGCITYADS2019, BG75HD12, bGpAnDacHeCk, BGVDay10%off, bGhOnEy10
(probably won’t work, but you can try them out)
Price history and price alert
Price history (for all/most countries) for iFlight Cinebee 75HD Plus Drone BNF is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).