"We are more than excited to announce the launch of the Turing Pi 2 on Kickstarter on May 11, 2022, 9 AM PT. The board price tag starts at $199 for super early birds, plus $10 for each Raspberry Pi compute module adapter. Become the first to start utilizing the immense potential of the Turing Pi 2. Hop down a rabbit hole of the self-hosted revolution."
"plus $10 for each Raspberry Pi compute module adapter." which I assume means you are also on the hook for finding and paying for however many Compute Modules you want to populate this board with.
From the email I got earlier: "Additionally, we are in the process of sourcing compute modules directly from the Raspberry Pi foundation, which means that we will do our best to deliver Raspberry Pi CM4 to all supporters who need them."
Depends heavily on what you want to populate it with. The existing alternative to this on the market today is this board: https://www.seeedstudio.com/Jetson-Mate-Cluster-Advanced-wit... which appears to run at ~USD2,200 when fully populated with the most expensive modules available.