So I think I got it now. If you subscribe from Hachette, you get some freebies along the way. This includes the pilot figures, some patches, magazine holding binders, and a custom parts carrier box. Additionally, if you "premium subscribe" (must start prior to week 5 for an extra 250 yen each week), you will get the display case at the end. This really appeals to me because I really like the build aspect yet exploits me by allowing for small commitments over time.