Blurb Specialises in superior‑quality print books with Superior layout choices ideal for Visible initiatives including pictures books, artwork collections, portfolios, and design‑centric works. Together with print services, Blurb supports ebook conversion and presents distribution through worldwide channels. . Set the inside margin (gutter) generously — KDP requires larger sized gutters https://whitemagicstudios.co.uk/blog/how-can-you-open-your-earnings-with-self-publishing-on-amazon/