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 (58.87 USD): BGJON8
Coupon (58.87 USD): BGRCParts8
Coupon (58.87 USD): MVC8SPRING
(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): BGdragonBoat, BGSS10%SW, bGhOnEy10, bgshOOp10, BGRC902, BgoFErTaSchInA10, BGLKJM3, BgcLuBofErtA10, BGAFF10OFF, BGCuponation10, BGDAVIS, BGHONEY2110, Parts8, BG1efeb0
(there’s a little possibility that old coupon will work)
Price history and price alert
Check out price history chart (for all/most countries) for iFlight SucceX Whoop F4 AIO 1S RC AIO Board.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).