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Publishing · head to head

Kindle Direct Publishing vs Pressbooks

Kindle Direct Publishing logo

Kindle Direct Publishing

Publishing

Amazon self-publishing platform that is free to use, earning Amazon a royalty cut instead of a fee, with a hard price band and per-megabyte delivery cost governing the 70% rate

From
Free
Rated
-
Full reviewWebsite
Pressbooks logo

Pressbooks

Publishing

Open source book production built on WordPress, and the default tool for open textbooks

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Kindle Direct Publishing the 70% royalty band has hard edges: pricing even one cent outside $2.99-$12.99 drops the royalty to 35%, which is a cliff, not a gradual scale, and easy to trigger by accident when adjusting price for a promotion.; Pressbooks self-hosting is free in licence terms only; it requires WordPress multisite administration, upgrades and backups, which is a real staff cost most institutions underestimate.
  • They diverge on capability: Kindle Direct Publishing covers Free publishing, Pressbooks covers Single source, three outputs.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Kindle Direct Publishing and Pressbooks actually diverge.

Attributes where Kindle Direct Publishing and Pressbooks differ
AttributeKindle Direct PublishingPressbooks
Pricing modelFree to publish; Amazon earns a royalty share rather than a feeOpen source, no licence fee
PlatformsWebWeb, Self-hosted

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Publishing).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Kindle Direct Publishing

  • Free publishing
  • 70%/35% royalty tiers
  • Print-on-demand
  • KDP Select
  • Delivery fee deduction
  • Pre-order and release tools

Only in Pressbooks

  • Single source, three outputs
  • Cloning and adaptation
  • H5P interactive content
  • LMS integration
  • Open source under the GPL
  • Accessibility tooling

What people use each for

The jobs each tool is most often brought in to do.

Kindle Direct Publishing

  • A self-published author wanting free, no-fee distribution to the largest single ebook and print-on-demand marketnot Pressbooks
  • An author pricing a book between $2.99 and $12.99 to qualify for the 70% royalty tier rather than 35%not Pressbooks
  • A publisher considering KDP Select exclusivity to earn Kindle Unlimited page-read royalties, trading away distribution on other retailers for the enrollment periodnot Pressbooks
  • An author with a large, image-heavy ebook file who needs to understand the per-megabyte delivery fee before setting a pricenot Pressbooks

Pressbooks

  • A university library replacing a commercial textbook by adapting an existing open textbook rather than commissioning a new onenot Kindle Direct Publishing
  • A course team that wants readings delivered inside Canvas or Moodle with embedded exercises rather than as a static PDFnot Kindle Direct Publishing
  • A research institute publishing reports that must exist as a web page, an EPUB and a printable document without maintaining three filesnot Kindle Direct Publishing
  • A consortium standardising open textbook production across several institutions with a shared catalogue of adaptable titlesnot Kindle Direct Publishing

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Kindle Direct Publishing

  • The 70% royalty band has hard edges: pricing even one cent outside $2.99-$12.99 drops the royalty to 35%, which is a cliff, not a gradual scale, and easy to trigger by accident when adjusting price for a promotion.
  • The delivery fee, roughly $0.15 per megabyte, is deducted on every sale under the 70% tier, so image-heavy or long ebooks lose meaningfully more revenue per sale than a plain-text book at the same list price.
  • KDP Select exclusivity, while optional, is the only route to Kindle Unlimited page-read royalties, so authors face a real trade-off between Amazon-only reach with page-read income and wider distribution without it.
  • Public domain or primarily public-domain content is capped at the 35% royalty regardless of price, so that category of publisher cannot access the higher rate at all.
  • As a single-retailer platform, an author relying solely on KDP is concentrated in one sales channel controlled entirely by Amazon policy, which has changed royalty terms before (the July 2026 price band expansion is itself an example) and can do so again.

Pressbooks

  • Self-hosting is free in licence terms only; it requires WordPress multisite administration, upgrades and backups, which is a real staff cost most institutions underestimate.
  • Professional print PDF output depends on a commercial rendering engine that is licensed separately, so the genuinely free self-hosted route produces web and EPUB output but not press-quality print.
  • Design control is limited to the supplied themes unless someone writes custom CSS, so books tend to look recognisably like Pressbooks books.
  • There is no distribution, no ISBN service and no retail channel, so it produces files and web pages but plays no part in selling anything.
  • The editing experience inherits WordPress conventions, and authors working on long or heavily structured manuscripts find it slower than a dedicated writing application.

Pricing, plan by plan

Kindle Direct Publishing

Free
  • 70% royalty tierFree
    • Applies to ebooks priced $2.99-$12.99 (expanded from $9.99 ceiling in July 2026)
    • In-copyright works only
    • Delivery fee of roughly $0.15/MB deducted per sale
  • 35% royalty tierFree
    • Applies below $2.99, above $12.99, or for public domain content
    • No delivery fee deducted
    • Applies automatically outside eligible territories for the 70% tier

Pressbooks

Free
  • PressbooksFree
    • GPL licensed, self-hostable with no software fee
    • WordPress multisite administration is your responsibility
    • Print PDF export depends on a separately licensed rendering engine

Which should you pick?

Choose Kindle Direct Publishing if

  • You need free publishing.
  • You want to start without paying.
  • You also want 70%/35% royalty tiers.
Kindle Direct Publishing review

Choose Pressbooks if

  • You need single source, three outputs.
  • You want to start without paying.
  • You work on Web, Self-hosted.
  • You also want cloning and adaptation.
Pressbooks review

Questions people ask

Is Kindle Direct Publishing or Pressbooks better?
Neither clearly leads. Kindle Direct Publishing starts at Free and Pressbooks at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Kindle Direct Publishing or Pressbooks?
Kindle Direct Publishing starts at Free and Pressbooks at Free.
Does Kindle Direct Publishing or Pressbooks run on more platforms?
Kindle Direct Publishing runs on Web. Pressbooks runs on Web, Self-hosted.
Can I use Kindle Direct Publishing for free?
Both have a free tier, so you can try either at no cost before committing.
What is Kindle Direct Publishing best used for?
Kindle Direct Publishing is most often used for a self-published author wanting free, no-fee distribution to the largest single ebook and print-on-demand market, an author pricing a book between $2.99 and $12.99 to qualify for the 70% royalty tier rather than 35%, a publisher considering kdp select exclusivity to earn kindle unlimited page-read royalties, trading away distribution on other retailers for the enrollment period, an author with a large, image-heavy ebook file who needs to understand the per-megabyte delivery fee before setting a price. Of those, a self-published author wanting free, no-fee distribution to the largest single ebook and print-on-demand market and an author pricing a book between $2.99 and $12.99 to qualify for the 70% royalty tier rather than 35% are not what Pressbooks is typically brought in for.
What can Kindle Direct Publishing do that Pressbooks cannot?
Kindle Direct Publishing covers Free publishing, 70%/35% royalty tiers, Print-on-demand, KDP Select. Pressbooks covers Single source, three outputs, Cloning and adaptation, H5P interactive content, LMS integration.

Answered from the vendors’ own pages

Kindle Direct Publishing: Does KDP cost anything to use?

No signup or listing fee. Amazon earns revenue through the royalty share (65% or 30% of the list price after territory and delivery-fee adjustments) rather than a subscription or fee.

Pressbooks: Is Pressbooks really free?

The software is GPL licensed and free to self-host. The hosted service is priced, and professional print PDF output requires a commercially licensed renderer, so budget accordingly.

Kindle Direct Publishing: What is the current 70% royalty price band?

As of July 2026, $2.99 to $12.99, expanded from the previous $2.99 to $9.99 ceiling that had been unchanged since 2007.

Pressbooks: Can I sell a book made in Pressbooks?

You can sell the EPUB or the printed book through any distributor, but Pressbooks itself provides no ISBN, no storefront and no distribution.

Kindle Direct Publishing: What is the delivery fee?

Roughly $0.15 per megabyte of file size, deducted per sale only on the 70% royalty tier, calculated from the delivered file size.

Pressbooks: Why do universities use it for open textbooks?

Because an openly licensed book can be cloned into another institution network and adapted for a different course, which turns a finished textbook into a starting point rather than a fixed artefact.

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