The BladeForums.com 2024 Traditional Knife is available! Price is $250 ea (shipped within CONUS).
Order here: https://www.bladeforums.com/help/2024-traditional/
are you looking for something already beveled and heat treated to put a handle on?
I have a couple in 440c tucked back. Shoot me a PM or email if interested.
Dictum in Germany sells raw blanks and finished blades.
https://www.dictum.com/en/knives/blades-blade-blanks/for-japanese-kitchen-knives
Several of the knife suppliers sell stick tang finished Japanese blades. IIRC, a few sell stick tang blanks. Of course, you could have them water jet cut by someone.