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Reference (Religious Studies & Reference, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Reference (Religious Studies & Reference, Kindle eBooks), updated Nov 2, 2026: median price $9.14, median 252 reviews, average rating 4.6 and a KDPTop opportunity score of 26/100 (highly competitive).
| Price range (middle 50%) | $3.99 – $13.14 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 3% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 18% of the parent category Religious Studies & Reference (1,436), one of the easier corners under it.
- Only 3% of its best sellers are under 90 days old, fewer than in 88% of Kindle eBooks categories: established titles hold the list.
- Its review barrier is higher than in 71% of Kindle eBooks categories: the median best seller has 252 reviews, so new books need time to build up.
Top 10 Reference best sellers
-
The Case for Christ: A Journalist's Personal Investigation of the Evidence for Jesus
by Lee Strobel
- List rank#1
- Price$11.99
- Rating4.8
- Reviews15,801
-
All of the Women of the Bible
by Edith Deen
- List rank#2
- Price$1.99
- Rating4.7
- Reviews412
-
Tarot for Beginners: A Guide to Psychic Tarot Reading, Real Tarot Card Meanings, and Simple Tarot Spreads (The Divination Series: Tarot, Runes and More)
- List rank#3
- Price$2.99
- Rating4.7
- Reviews6,849
-
The Essential Rumi - reissue: New Expanded Edition of The Popular Spiritual Poetry Collection
- List rank#4
- Price$12.49
- Rating4.7
- Reviews4,608
-
The Gnostic Gospels (Modern Library 100 Best Nonfiction Books)
- List rank#5
- Price$7.99
- Rating4.5
- Reviews2,707
-
Bible Reference Sheets: Study Guide to all 66 Books of the Bible (Bible Study Basics)
by Kevin McKinney
- List rank#6
- Price$4.95
- Rating4.6
- Reviews465
-
What the Buddha Taught: Revised and Expanded Edition with Texts from Suttas and Dhammapada
by Walpola Rahula
- List rank#7
- Price$8.34
- Rating4.6
- Reviews2,135
-
Runes for Beginners: A Guide to Reading Runes in Divination, Rune Magic, and the Meaning of the Elder Futhark Runes (The Divination Series: Tarot, Runes and More)
- List rank#8
- Price$2.99
- Rating4.8
- Reviews9,042
-
The Buddha's Teachings for Beginners: A Simple Guide to Connect the Buddha's Lessons to Everyday Life
by Emily Griffith Burke
- List rank#9
- Price$1.99
- Rating4.5
- Reviews199
-
Commentary on the Torah
by Richard Elliott Friedman
- List rank#10
- Price$1.99
- Rating4.5
- Reviews254
FAQ
Is Reference a good niche for Amazon KDP?
Its KDPTop opportunity score is 26/100, which makes it highly competitive. The median best seller has 252 reviews and sells for $9.14.
How many reviews do you need to rank in Reference?
The median best seller has 252 reviews, and 31% of them have fewer than 100.
What do Reference best sellers cost?
The median price is $9.14; half of the best sellers are priced between $3.99 and $13.14.
Can new books break into Reference?
3% 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.