The Azure Kinect is currently supply constrainted due to the global semiconductor shortage. You can read more about why here:
They are being produced but with very long lead times. As a long time Microsoft partner, Scatter has priority access to supply and we have sensors in stock today. We make these available to Depthkit Studio customers through our Depthkit Studio Hardware package. If this is something that interests you, please get in touch.
Some community members have had luck asking for second hand devices on the Volumetric Filmmaking facebook group