Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (152.25 USD): BG4cb
Coupon (182.70 USD): BGAFF10OFF
Coupon (182.70 USD): BGTT10
Coupon (182.70 USD): bGhOnEy10
Coupon (182.70 USD): BGdragonBoat
Coupon (182.70 USD): BGSS10%SW
Coupon (194.00 USD): 7bcdf9
(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): BGPaEi5744, Wholesale20, BGcb4k, 10rcdrones, BGalbert1, AFfbG10, BGIF4K, BGBCEICB4K, BG10New, BGANcb4k, BGNDcb4k, 502C6B, BGBINKUPON744, BG11CB4K, BGBFCR25, BGCITYADS2019, BGBFcb4k, BG25cb4k, BGSP25cb, BGVDay10%off
(there’s a little possibility that old coupon will work)
Price history and price alert
Here is price history (for all/most countries) for iFlight Cinebee 4K Drone PNP.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).