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Reference (Philosophy, Kindle eBooks): Amazon KDP category data

Amazon Kindle eBooks Best Sellers data for Reference (Philosophy, Kindle eBooks), updated Nov 3, 2026: median price $5.99, median 80 reviews, average rating 4.4 and a KDPTop opportunity score of 21/100 (highly competitive).

21Opportunity / 100
$5.99Median price
80Median reviews
Price range (middle 50%)$2.49 – $10.99
Average rating4.4
New releases (90 days)2%
Books on the list100
StoreKindle eBooks

What stands out

  • Its median reviews are 5% of the parent category Philosophy (1,665), one of the easier corners under it.
  • Only 2% of its best sellers are under 90 days old, fewer than in 93% of Kindle eBooks categories: established titles hold the list.
  • Prices spread wide: the middle half runs from $2.49 to $10.99, so budget editions and premium or boxed sets sell side by side.

Top 10 Reference best sellers

  1. The Replublic: The Original Unabridged And Complete Edition (Plato Classics) book cover by Plato

    The Replublic: The Original Unabridged And Complete Edition (Plato Classics)

    by Plato

    • List rank#1
    • Price$0.99
    • Rating4.6
    • Reviews2,750

    View on Amazon · Full data on KDPTop

  2. Mastering Logical Fallacies: The Definitive Guide to Flawless Rhetoric and Bulletproof Log book cover by Michael Withey

    Mastering Logical Fallacies: The Definitive Guide to Flawless Rhetoric and Bulletproof Logic

    by Michael Withey

    • List rank#2
    • Price$2.99
    • Rating4.2
    • Reviews664

    View on Amazon · Full data on KDPTop

  3. Plato and a Platypus Walk Into a Bar...: Understanding Philosophy Through Jokes book cover by Thomas Cathcart

    Plato and a Platypus Walk Into a Bar...: Understanding Philosophy Through Jokes

    by Thomas Cathcart

    • List rank#3
    • Price$2.99
    • Rating4.4
    • Reviews1,878

    View on Amazon · Full data on KDPTop

  4. Take Nothing Personally: How to Stop Reacting, Focus on Yourself, and Live With Ease book cover by Shubham Kumar Singh

    Take Nothing Personally: How to Stop Reacting, Focus on Yourself, and Live With Ease

    by Shubham Kumar Singh

    • List rank#4
    • Price$9.99
    • Rating4.5
    • Reviews124

    View on Amazon · Full data on KDPTop

  5. Shop Class as Soulcraft: An Inquiry into the Value of Work book cover by Matthew B. Crawford

    Shop Class as Soulcraft: An Inquiry into the Value of Work

    by Matthew B. Crawford

    • List rank#5
    • Price$7.99
    • Rating4.3
    • Reviews1,814

    View on Amazon · Full data on KDPTop

  6. The Art of Living an Absurd Existence: Paradoxes and Thought Experiments That Change the W book cover by Robert Pantano

    The Art of Living an Absurd Existence: Paradoxes and Thought Experiments That Change the Way You Think

    by Robert Pantano

    • List rank#6
    • Price$4.99
    • Rating4.5
    • Reviews434

    View on Amazon · Full data on KDPTop

  7. Philosophy and Great Thinkers - Philosophy Made Easy - A Beginner-Friendly 4-Book Box Set  book cover by The Aether Library

    Philosophy and Great Thinkers - Philosophy Made Easy - A Beginner-Friendly 4-Book Box Set Journey Through 2,500 Years of Western Philosophy, From Socrates to the Modern World

    by The Aether Library

    • List rank#7
    • Price$2.99
    • Rating5.0
    • Reviews2

    View on Amazon · Full data on KDPTop

  8. The Philosophy Book (DK Big Ideas) book cover by Will Buckingham

    The Philosophy Book (DK Big Ideas)

    by Will Buckingham

    • List rank#8
    • Price$10.99
    • Rating4.6
    • Reviews4,059

    View on Amazon · Full data on KDPTop

  9. Meditations book cover by Marcus Aurelius

    Meditations

    by Marcus Aurelius

    • List rank#9
    • Price$0.99
    • Rating4.6
    • Reviews5,984

    View on Amazon · Full data on KDPTop

  10. Ethics: The Essential Writings (Modern Library Classics) book cover by Gordon Marino

    Ethics: The Essential Writings (Modern Library Classics)

    by Gordon Marino

    • List rank#10
    • Price$8.99
    • Rating4.4
    • Reviews310

    View on Amazon · Full data on KDPTop

Same niche in Books: Reference

FAQ

Is Reference a good niche for Amazon KDP?

Its KDPTop opportunity score is 21/100, which makes it highly competitive. The median best seller has 80 reviews and sells for $5.99.

How many reviews do you need to rank in Reference?

The median best seller has 80 reviews, and 54% of them have fewer than 100.

What do Reference best sellers cost?

The median price is $5.99; half of the best sellers are priced between $2.49 and $10.99.

Can new books break into Reference?

2% of the current best sellers were released in the last 90 days.

About this data

Data comes from KDPTop's daily crawl of Amazon's public Best Sellers pages; medians use the latest list. The opportunity score (0–100, higher is easier to enter) combines the review barrier, the share of low-review books, list turnover, new-release share and price.