Go down and check coupons out. Remember to check price history if it is available. Best price?
MCU: STM32F405RGT6 32-bit processor, IMU: ICM20689 (SPI), Barometer: BMP280
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
Holybro Kakute F4 AIO V2 Flight Controller PDB OSD+ Atlatl HV 5.8G 40CH Raceband FPV Transmitter Flight Controller Tower | $120.53 | – |
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. ($51.51): BGJON8
2. ($51.51): BGRCParts8
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Old coupons (from the oldest to the newest): AFfbG10, BGGEPPart, BGVDay10%off, Parts8, BGAFF10OFF, BGTT10, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BGRC902, BgoFErTaSchInA10, BgcLuBofErtA10, BGCuponation10, BGDAVIS, BGHONEY2110, BGRACING1125
(there’s a little possibility that old coupon will work)
Price history and price alert
Price history (for all/most countries) for Holybro Kakute F4 V2 AIO Flight Controller is here.
Price records source(s): Gearbest, 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)).