I finally purchased all available CDs and will get them within the next few weeks. Is it possible that someone from the staff may change or add the missing albums under the related albums section? I'll perhaps add some scans when I got the CDs. The list is not complete.
The product page could also need a refreshing:
http://vgmdb.net/product/937
CD-Releases
http://vgmdb.net/album/4630 < Original OST
http://vgmdb.net/album/8711 < Remix Album + International Songs Replacements
http://vgmdb.net/album/34846 < Remix Album + New Songs
http://vgmdb.net/album/38420 < Remix Album + New Songs²
Digital:
http://vgmdb.net/album/9312 < Digital Original OST
http://vgmdb.net/album/9186 < Digital EP Single Album based on the second album linked above