GrovePi Zero

Dear all,

I am currently trying to start a rocketry project with the raspberry pi zero. I will use it and other addons (prefereably the GrovePi Zero since I can stream data to Initial State) to stabilize the rocket and want to buy a GrovePi Zero to use an altimeter and 3 axis gyro, but, I cannot find them anywhere! I searched the Dexter Industries website but still nothing (Amazon, Seeed Studio and Adafruit as well). Do any of you know how I could possibly obtain a GrovePi Zero???

Thank you for your help