Thread:0Kimiko0/@comment-28651072-20170319135629/@comment-31119526-20170523125805

Hmm? Oh, those pages you linked only mention that extras include "character transformation, seiyuu interviews, etc.", without going into further detail. Amazon JP's pages also have the same text. I don't have any bright ideas on how to search for a blog which might list all the contents at the moment. Seiyuu interviews aren't on the ISOs I have though, so my guess is they're in the box set booklet.

Judging from the Japanese DVDs and BDs in my anime collection, MSRPs are pretty common on Japanese releases.