Every self-publishing firm offers a number of optional services on top of its base price. If you want a professional-quality book, these are the options you want:
-Professional copyediting and proofreading of the initial manuscript and final proof. Money spent on this is money well spent. Don't economize by trying this alone. Your readers will love finding the inevitable errors, and you will hate paying the self-publisher to correct and reprint your book.
-Professional layout or setup of the book's interior. This may be called "the setup fee" and is often included in the base price. The self-publisher has the proper software for this.
-Professional cover design. You may supply the photo or illustration, but don't insist on drawing or lettering your own cover. If you don't like what the publisher's graphic artist suggests, ask for another design.
-Register your book with the Library of Congress. It sounds easy: Fill out forms and write a check. But the forms are complicated, rather like patent applications, and with my first book only an 18-month correspondence straightened everything out. Save your mental health and pay $100 to get it done.
Don't waste your money on:
-Independently buying your own cut-rate ISBN number for your book. A self-publishing firm will not be able to use it.
-The pricey package allowing you "unlimited customization" of your book. Why pay your chosen self-publishing firm thousands of dollars just for the luxury of spurning its help and advice?
-Promotional or marketing packages that will compose press releases, send your books to reviewers, and so on. Self-published books do not benefit from these tactics.