Direct welding ESC PDB, Maximum current: 200A, Built-in current sensor, Copper foil thickness: 2OZ * 8, Input voltage: 2-6S, Weight: 15.6g, Hole mounting size: M3 30.5 * 30.5mm, FPV transmitter: 0/25/100/200/400/600mW 48CH switchable transmitter (BFOSD control), Built-in 5V/3A BEC output, Board thickness: 1.6MM.
Go down and check coupons out. Remember to check price history if it is available. Best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($41.70): BGAFF10OFF
2. ($41.70): BGTT10
3. ($41.70): bGhOnEy10
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): 502C6B, HGLF4, AFfbG10, BGVDay10%off
(probably won’t work, but you can try them out)
Price history and price alert
Check out price history chart (for all/most countries) for HGLRC F4 V6PRO RC Flight Controller. The lowest price was: $29.99.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).