When this got announced I bought a copy of Unrecorded Chronicles from Play Asia. They have always been good for me and easy enough to get shipping from, however they are out of print / out of stock. So they might never get any more in. I'm also finding no results on NCSX. So the two import companies I trust are out the window.
Amazon under "New" has some copies that are FULFILLMENT BY AMAZON. These will NOT ship from Japan and they are around 50 bucks. You get your item directly from the company themselves, so you aren't dealing with a shifty middle man that might not give you a refund. The slightly cheaper has one copy in stock, and the other only has two, so I would jump on that quick someone if money isn't an issue.
As posting this now my advice would be don't wait and don't hesitate because Ebay might be your only other viable and that can go south sometimes depending on the seller. Just my two cents on that.