The same hundred puzzles as the digital pack, in the form most people actually want them.
What binding buys you
Lay-flat, so the book stays open at page 61 while you work instead of closing itself every time you lift the pencil. It is the single difference between a puzzle book that gets finished and one that ends up in a drawer.
The paper matters more than it sounds
Uncoated, 120gsm. Pencil bites, the eraser lifts cleanly, and a biro will not bleed to the next page. Gloss photographs beautifully and is horrible to write on, which is a trade most puzzle books make in the wrong direction.
It includes the digital pack
You get the PDF as well, so any page you ruin, spill on, or want to hand to somebody else is a reprint rather than a loss.