You can create price alert here, copy coupons and view price history. What is the best price?
Item name: Kakute F7, MCU: STM32F745 32-bit processor, Barometer: BMP280, IMU: ICM20689 (SPI)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. Only one coupon available!
Link: Banggood product page
1. ($126.49): BGRCParts8
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/5cd
Old coupons (from the oldest to the newest): BGHK3, AFfbG10, BG13HK85, BG13HK18, BGF3F7, 502C6B, BGF7KAK, BG12MRP, BGF788, BGBFRC10, BGBFV15, BGCITYADS2019, BGGEPPart, BGWKBRO, BGVDay10%off, BGKAK, BGET56M, BGYUS81, BGTT10, bGhOnEy10, BGKLT750, BGBRO12T, BGdragonBoat, bgshOOp10, BGRC902, BgoFErTaSchInA10, BGZHFN13, BgcLuBofErtA10, BG11PP12, BGAFF10OFF, BGCuponation10, BGDAVIS, BGHONEY2110, Parts8
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for Holybro Kakute F7 Flight Controller Tekko32 35A ESC? There we go.
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)).