As far as I was aware, there are only paperbacks.
I sell print editions through Amazon KDP and IngramSpark. Amazon is the lion's share, so I designed the print edition based on the formats they offer. At the time I started working on it, KDP only supported soft covers. They added hard covers right as I was finishing the book, and I didn't want to have to go back and redo everything.
I have to admit that "Crafting Interpreters" is pushing the limits for what you can get away with on a soft cover. When I first started writing the book, I expected it to be (much) shorter, but I just estimated wrong.
If I had a time machine, I might go back and tell myself to print it as two separate volumes.
I've had my eye on Crafting Interpreters for a bit now, and I don't mind paying extra for a nicer version — especially if it's going into the pockets of an independent writer.
I know Amazon is a must for authors, but as an Amazon avoider, I was delighted to able to order it through my local bookshop.
I have hardcopies of both and "Crafting" remains my all-time favorite programming book.
It's delightful, educational, and beautiful.