Managed to get the Atelier Shallie 20th anniversary memorial box from GustShop through a forwarding service. Went with the strongest combo bundle since it includes the 2 Atelier Shallie albums.
The best thing about the 20th anniversary memorial box is probably the hardcover artbook.
Here’s the standard limited edition of Atelier Shallie.
Some other additional stuffs that came beside the box.
The recollection archives is a music CD includes Escha and Logy DLC BGMs that were not in the previous game music albums and some unused Shallie music tracks.
Lastly, Atelier Shallie OST and Vocal albums.
Been playing Atelier Rorona Plus on PS3 and Vita for the past weeks and did 2 playthroughs so now I can just focus on Atelier Shallie.