You can get it from Amazon.co.jp. But it seems that they don't ship to the US.
Edit: Here's the Link:
http://www.amazon.co.jp/gp/product/B...=AN1VRQENFRJN5
The price is around $62 for PS4 and Xbox One, and ~$47 for PS3 and Xbox 360.
I might be able to pick a few of them up (just a few), my friend is going to Japan on the 19th. I need to check with him to see how many can he bring back for me.