With regard to designing a hardcover book, the same interior page files can be used for a paperback and a hardcover. Cover files, however, are different for hardcovers because the binding is not the same as a paperback. For a hardcover book, you can choose a case laminate binding or a regular binding with a dust jacket.
When it comes to distributing a hardcover, the submission process is the same as other formats. However, Bublish utilizes IngramSpark to distribute hardcovers globally. This means that your hardcover can be available in 40,000 sales channels around the world, including Amazon, Barnes & Noble, Walmart, Target, etc. Please note that it may take up to six weeks for your hardcover book to be fully available on all sales channels.