I often trust CDJapan when it comes to music CDs, DVDs, and Blu-Ray straight from Japan. What happens if there is an item not sold at CDJapan but sold in other stores, like for instance the Otomedius Original Soundtrack and the Busou Shinki Character Song and Special Radio Rondo Vol.2 that were sold exclusively at Konamistyle?
There is a new feature that CDJapan allows you to request an item you want to buy. This is called the Special Request Shopping Service. Now's your chance to buy some Konamistyle exclusive items even when you're not shopping on it! CDJapan lets them do the trick for you.
Further details:
http://www.cdjapan.co.jp/request/shopping.html