When you're ready to publish your book, two platforms dominate the conversation: Amazon KDP (Kindle Direct Publishing) and IngramSpark. They look similar on the surface — both let you upload a manuscript and sell print and digital books — but they serve meaningfully different purposes. The choice you make will affect your royalties, where your book appears, who can order it, and how you're perceived in the industry.
The good news: this isn't actually an either/or decision for most authors. But understanding what each platform does well is essential before you decide how to combine them.
Amazon KDP: The Case For It
KDP is where most self-publishers start, and for good reason. It's free to use, requires no setup fees, and gets your book in front of the largest pool of book buyers on earth. For ebooks in particular, it's nearly unbeatable.
The 70% royalty tier
KDP pays 70% royalties on ebooks priced between $2.99 and $9.99 sold in most major markets. Below $2.99 or above $9.99, the royalty drops to 35%. This pricing structure effectively determines how most KDP authors price their books — the $2.99–$9.99 window isn't arbitrary, it's where the math makes sense.
For print books, KDP Print pays 60% of the list price minus printing costs. A 300-page paperback priced at $14.99 will net you roughly $4.50–$5.50 per copy sold on Amazon, depending on trim size and color. That's a reasonable margin for a book that sells directly through the world's largest bookstore without any setup cost.
Kindle Unlimited
If you enroll your ebook in KDP Select, it becomes available in Kindle Unlimited — Amazon's subscription reading program with over four million subscribers. KU readers don't pay per book; they read from the subscription pool, and authors are paid per page read from a monthly royalty pool. For authors in certain genres (particularly romance, SFF, and thrillers), KU income can exceed direct sales income substantially.
The catch: KDP Select requires 90-day exclusivity. While enrolled, you cannot sell your ebook anywhere else — not Apple Books, not Kobo, not your own website. Each 90-day period auto-renews unless you opt out.
Ease of setup
KDP's dashboard is genuinely easy to use. You can upload a manuscript, add cover art, set pricing, and publish in under an hour. Customer support is responsive. Metadata changes go live quickly. For authors who want to get a book out without navigating a complex interface, KDP is the right starting point.
IngramSpark: The Case For It
IngramSpark is the self-publishing arm of Ingram Content Group — the largest book distributor in the world. When bookstores and libraries order books, they almost always order through Ingram. That's the essential thing to understand about IngramSpark: it's not primarily a retail platform, it's a distribution gateway.
Bookstore and library reach
A book published through IngramSpark is automatically listed in Ingram's catalog, which means brick-and-mortar bookstores can order it through their normal ordering systems. Barnes & Noble, independent bookstores, and libraries all use Ingram as their primary distributor. A book available only through KDP Print is technically orderable from these stores, but in practice, most bookstores won't order Amazon-published titles — the terms aren't favorable for them.
If getting your book into physical bookstores or library systems matters to you, IngramSpark is not optional.
Print quality and format options
IngramSpark's print quality is widely considered superior to KDP Print for professional applications, particularly for anything going to bookstores or trade review. The paper quality is slightly higher, the binding is more consistent, and the color printing is more accurate. For most readers buying on Amazon, the difference is minimal. For a book that needs to impress a bookseller or librarian, it matters.
IngramSpark also offers hardcover printing, which KDP Print does not (KDP offers hardcovers only in limited configurations). If you want to sell case-laminate hardcovers through trade channels, IngramSpark is your only self-publishing option.
Wide ebook distribution
IngramSpark distributes ebooks to Apple Books, Barnes & Noble Nook, Kobo, Scribd, OverDrive (which supplies libraries), and dozens of other retailers. For authors going "wide" — selling everywhere rather than enrolling in KDP Select — IngramSpark is one aggregator option (alongside Draft2Digital, which many authors prefer for its simpler interface).
Costs
This is IngramSpark's main disadvantage. Setting up a title costs $49 (print) or $49 (ebook), or $49 for print+ebook combined. Revisions after publication cost $25 per file. IngramSpark periodically offers discount codes that reduce or eliminate setup fees — worth checking before you pay. The royalty rates are lower than KDP for Amazon sales, which is why most authors don't use IngramSpark as their primary Amazon channel.
The Hybrid Strategy Most Professionals Use
The most common approach among experienced self-publishers combines both platforms by function:
- KDP for ebooks: Higher royalties on Amazon, KDP Select eligibility if you want KU, easy management.
- IngramSpark for print: Wide distribution to bookstores, libraries, and international markets. You can still sell your print book on Amazon through Ingram — KDP Print's expanded distribution is available but IngramSpark's terms for non-Amazon channels are better.
The key to making this work: when you upload your print book to KDP Print, disable KDP's "Expanded Distribution" option and instead route all non-Amazon print orders through IngramSpark. KDP's expanded distribution pays lower royalties on non-Amazon sales than IngramSpark does, so you'd be leaving money on the table.
Print Quality: A Real Comparison
Both platforms use print-on-demand technology, which means each copy is printed when ordered. The hardware is similar (both use HP Indigo and Xerox digital presses). The difference shows up in paper stock and quality control consistency.
For a standard 6x9 trade paperback with black-and-white interior, the difference between KDP Print and IngramSpark is subtle — most readers won't notice. For illustrated books, cookbooks, or anything with significant interior color, IngramSpark's color accuracy and paper quality are meaningfully better. For hardcovers, IngramSpark is your only option.
If your book will be reviewed by trade publications (Publishers Weekly, Kirkus, BookPage), request advance copies via IngramSpark. The print quality signals professional production standards that matter to reviewers.
When to Use KDP Only
Not every book needs the hybrid approach. KDP alone makes sense if:
- You're publishing genre fiction primarily for the Amazon/KU audience and don't need bookstore placement
- You want to enroll in KDP Select and don't plan to sell print books through trade channels
- You're testing a new pen name or niche and want minimal setup complexity
- Your print book targets a narrow audience that primarily buys on Amazon
When You Need IngramSpark
Add IngramSpark to your distribution stack when:
- You want your print book available to bookstores and libraries
- You're publishing hardcovers
- Your book has a regional audience (local bookstores, gift shops) that orders through Ingram
- You're going wide with ebooks and want a single distributor for all non-Amazon channels
- You want your imprint name (not Amazon's) listed as the publisher in trade databases
The Setup Cost Question
Many authors hesitate at IngramSpark's $49 setup fee. To put it in perspective: if your print book sells 10 copies at a $5 royalty per copy, you've covered the setup fee. For a book with genuine distribution goals, it's a negligible one-time cost. IngramSpark regularly runs promotions with coupon codes for free or discounted setup — ALLi (Alliance of Independent Authors) members get ongoing discounts.
The revision fee ($25 per file) is the more meaningful ongoing cost. This is a strong incentive to get your files right before uploading. Have your book professionally formatted and proofread before you submit to IngramSpark — errors discovered after upload cost money to fix.
Before you finalize your distribution setup, make sure your manuscript is genuinely ready. Formatting and distribution infrastructure are wasted if the book itself needs developmental work or a clean proofread. Our editorial review service catches both structural issues and line-level problems before you commit to production files.