I have checked all old coupons and price is 40.59 USD for JHEMCU SH50A F4 OSD (in Banggood). Price history, coupons and price alert are available on this page. You probably want to know what is the best price?
Latest coupon and price update (UTC):
Banggood (40.59 USD)
Banggood warehouse is located in China. There are no coupons for this product in Banggood. The question is – is it a good price? From what I can see this price is higher than average price (25.09 USD).
Link: Banggood product page
Price: 40.59 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGAFF10OFF, BGCuponation10, BGDAVIS, BGHONEY2110, Parts8, BGRACING1125, BGGAL8, BGJON8, BGRCParts8, BG8FORMULAMX
(these codes were not working in latest coupon update, but you can check them out anyway)
Aliexpress
Click here… to search for JHEMCU SH50A F4 OSD 2-3S Flight Controller 5A on Aliexpress
Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for JHEMCU SH50A F4 OSD 2-3S Flight Controller 5A.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).