If you like it then go for it. But, as other comments said, it quite hard to find "some" physical copies even on yahoo auction or rakuten jp, simply because some product are discontinued long ago.
I do have physical box like IA bundle, it come with project file and audio sample. Some product may different but mostly they come with goodies like booklet, artbook, card, bag etc. Just like when you brought a Music CD.
Although, these box and all the goodies will deteriorate overtime, correcting dust, moisture and fungus, ants etc so it need some maintenance.
In my opinion. Digital download is a better choice overall. it's cheaper, it doesn't need physical space to keep them, 0 maintenance, it's dust free and won't deteriorate overtime. You can just download, install and good to go. No need for CD drive!