AuthorAZ

Publishing Database

What each publishing service actually does, on what terms, and where those terms are written down. Royalties, fees, exclusivity, ISBN handling and rights — every claim traced to the service’s own documentation, with the date an editor last checked it.

No rankings, no scores, no affiliate placement. Services appear in alphabetical order.

Filter by service type

19 of 19 services

Recent platform changes

Changes to royalties, fees and terms recorded against each service, newest first, with the source that documents them.

  1. Amazon KDP

    Kindle Unlimited renamed Kindle+, with audiobooks for US subscribers

    Amazon renamed Kindle Unlimited as Kindle+. Enrolment still runs through KDP Select. US subscribers can now listen as well as read: Virtual Voice audiobooks join automatically when their ebook is in KDP Select, eligible Pay-for-Production ACX audiobooks can be enrolled, and listening is paid by the page from the same KDP Select Global Fund as reading.

    Source: Kindle Unlimited is now Kindle+, KDP audiobooks now included · Kindle+ · ACX Audiobooks for KDP Select

  2. Amazon KDP

    KDP Terms and Conditions revised

    The first revision since 27 September 2024. Section 4.2 now lets Amazon disclose your legal name, contact details and sales information — units sold, royalties paid — to third parties who complain about your content or account; the old clause covered only name and contact details, for legal compliance. Section 5.2 drops the Kindle Book Lending clause, under which every ebook could be lent by customers and only books on the 35% option could opt out; whether lending itself has changed was not checked. Section 5.8 widens the ban on exploiting the service to manipulating, abusing, defrauding or otherwise misusing it, and section 5.4 adds bank-account eligibility rules to the payment policies Amazon may set. The KDP Select addendum now names Kindle+, the Kindle Vella terms are removed, and a new Addendum C covers ACX audiobooks in Kindle+.

    Source: KDP Terms and Conditions · KDP Terms and Conditions (27 September 2024 version, archived)

  3. Amazon KDP

    70% royalty price band widened to $12.99

    The upper limit of the 70% royalty band on Amazon.com moved from $9.99 to $12.99, so a title priced between those figures now earns 70% rather than 35%.

    Source: eBook list price requirements by marketplace

  4. ACX (Audiobook Creation Exchange)

    New royalty model

    Audible's new royalty model took effect: exclusive distribution rose from 40% to 50% and non-exclusive from 25% to 30%. New and newly claimed titles are enrolled automatically, and the legacy model is due to be discontinued by the end of 2026.

    Source: Audible's new royalty model

  5. IngramSpark

    Market access fee raised to 1.875%

    The market access fee, charged on every distributed sale, rose from 1.5% to 1.875% of local list price. On a $10 book that moves the deduction from 15 to 18.75 cents. The fee has changed form as well as size over the years: an annual per-title charge, then waived, then a percentage of list from 2023, charged at 1% before this and one earlier increase.

    Source: IngramSpark Pricing & Services Guide

  6. IngramSpark

    Revision fee free window retied to eproof approval

    Revisions were free within 60 days of a title’s first production date. They are now unlimited and free until the eproof is approved, with the $25 fee applying after that point.

    Source: IngramSpark Pricing & Services Guide · IngramSpark User Guide, Version 3.3

  7. Voices by INaudio

    Findaway Voices becomes the independent INaudio

    The platform, owned by Spotify since 2022, was spun back out in August 2025 as Voices by INaudio (INaudio, LLC). Author accounts, wide non-exclusive distribution and the 80% royalty split carried over; the former Findaway / Spotify support pages now redirect to INaudio's own domain.

    Source: Voices by INaudio Terms of Use

See something outdated?

Publishing terms change without announcement. If a fact here no longer matches the service’s own documentation, send the current source and it will be corrected.

Send a correction