AirSpeed), Current, Red) and 3.3V indicator(Red), OSD: AT7456E (SPI), Beeper: Yes, Analog Airspeed sensor: Yes, 5x Uarts (1, Switchable Dual Camera Inputs, WS2812 Led Strip: Yes, 2, 1x Softserial-Tx, High-precision Current Sense, 1x I2C, 3x LEDs for FC STATUS (Blue, RSSI, Digital Airspeed sensor: Yes, IMU: MPU6000 (SPI), 2x Motors, 4x ADC (VBAT, 6) with built-in inversion, Switchable 5V/9V for Camera/VTX, TR/SA VTX control: Yes, RSSI: Yes, Baro: BMP280 (I2C), 6x Servos outputs, MCU: 216MHz STM32F722RET6, 4, Blackbox: MicroSD card slot (SPI), 3.
Just check coupons out (with price alert and history). Let’s see what best price is ATM.
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 code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($44.79): BGF722W
2. ($50.39): bGhOnEy10
3. ($50.39): BGAFF10OFF
4. ($50.39): BgcLuBofErtA10
5. ($50.99): 7d18f7
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): AFfbG10, BGVDay10%off, BGLYW50, BGdragonBoat, BGRCAP10, bgshOOp10, BGF7222, BGRC902, BgoFErTaSchInA10
(probably won’t work, but you can try them out)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Matek Systems F722-WING STM32F722RET6 RC Flight Controller [EU/UK] ($-3)
Price history and price alert
Here is price history (for all/most countries) for Matek Systems F722-WING STM32F722RET6 RC Flight Controller. The lowest price was: $45.99.
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)).