Aliexpress
Click here… to search for Holybro Kakute F7 Flight Controller Atlatl HV V2 Tekko32 35A ESC 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 (112.50 USD): AFfbG10
Coupon (112.50 USD): affbg10
(CouponsFromChina.com tip: put item in your cart and apply coupon code there 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): BGF7FC, BGHBF7, BGWK920, BGHK101, BGH99K, 502C6B
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Price history (for all/most countries) for Holybro Kakute F7 Flight Controller Atlatl HV V2 Tekko32 35A ESC is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).