No production katana sold
in market is made in Japan anymore, since Japan government stop the
export of katana, unless with license and approval. Go and try get
from retail, and see if they have one.
Those made in Japan using
Tamahagane method by famous swordsmith might cost more than 20K
USD, even you can get one.
Although made
in China, CAS Hanwei is well known for their quality sword.
And when comparing to other brand side by side, CAS really stand
out. Specially the edge, finishing, guard tightness and handle
warping.