Reviewers from platforms like Creative Bear and Amazon highlight:
The 30th Anniversary Edition is designed as a coffee table centerpiece. The binding, the glossy paper stock, and the large format allow the reader to see the faint pencil strokes and white-out corrections Toriyama made. A PDF on a tablet or monitor cannot replicate the resolution of a printed page, nor does it allow you to zoom in on a tiny Slime sketch without losing clarity.
Some university libraries with Japanese pop-culture collections have physical copies. You could theoretically scan the book for personal, archival use. While providing a direct download link to a is copyright infringement, creating a personal backup of a book you physically own falls into a gray area.