AURA-0012: Kalliope ~Piano Concert~

[LiquidAcid]

Does anyone have an idea where to buy this album?

I've already googled, but the only thing that I find is generic information about the album, the VGMdb entry and lots of download links.

Tried searching on Amazon Japan and a lot of Shikata albums pop up, but sadly not this one.
Also tried the publisher site directly, and found this:
http://www.vagrancy.jp/shop/shop.htm

However it's virtually useless for me, since I can't read japanese...
Or is the album OOP? I found a reference to it on Otokichi, but he doesn't have any in stock currently.

Anyway, another question concerning this album:
Could it be that the album does include a bonus disc? I'm asking because some versions floating around the net have one included, at least it looks like a bonus disc. It's named liked this "Kalliope ~Piano Concert~ KANJI_I_DON'T_REMEMBER CD", where the kanji translates to appendix through the Google translator. It's probably one of those omake discs, but I'm not really sure about it since I can't find any good information about any extras for that particular album.