I make all my notebooks, to order, by recycling old books.
I remove most of the old pages, and then refill the books with 140 pages (70 sheets) of plain white paper. Then, I punch the books and bind them with a wire spine.
If plain paper isn't your thing...
You can UPGRADE and have the pages printed as a diary, food diary, recipe book etc... all you need to do is add the upgrade of your choice into your basket along with the book you have chosen.