In order to check to see if something is still in stock on japanese sites I'd always click the item, if it went in the cart I could order it.
Everytime I try this on BSSB's webpage I get this block of text:
恐れ入りますが、BABY，THE STARS SHINE BRIGHTは現在メンテナンスの為、閉店中です。
I can't read Japanese, so I eventually decided to run it through a translator, and got:
It is embarrassed, but BABY and THE STARS SHINE BRIGHT presently because of maintenance, are in the midst of closing. We apply annoyance, but now please wait for a while.
Which means the purchasing option is down for maintenance? What?