KDP categories · Top KDP authors
Systematic (Theology, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Systematic (Theology, Kindle eBooks), updated Nov 2, 2026: median price $9.99, median 182 reviews, average rating 4.7 and a KDPTop opportunity score of 30/100 (highly competitive).
| Price range (middle 50%) | $4.99 – $14.99 |
|---|---|
| Average rating | 4.7 |
| New releases (90 days) | 4% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 22% of the parent category Theology (844), one of the easier corners under it.
- Only 4% of its best sellers are under 90 days old, fewer than in 82% of Kindle eBooks categories: established titles hold the list.
- Prices spread wide: the middle half runs from $4.99 to $14.99, so budget editions and premium or boxed sets sell side by side.
Top 10 Systematic best sellers
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The Gospel Before Christianity: A Jewish Perspective on Jesus' Atonement, Sacrifice, and Redemption (Recovering the Original Gospel Series Book 1)
by Eitan Bar
- List rank#2
- Price$4.95
- Rating4.7
- Reviews350
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Systematic Theology, Second Edition: An Introduction to Biblical Doctrine
by Wayne Grudem
- List rank#3
- Price$40.99
- Rating4.8
- Reviews2,602
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An Expanded Commentary on Tozer's The Knowledge of the Holy: The Attributes of God: A Chapter-by-Chapter Theological Deep Study of Who God Is
by A.W. Tozer
- List rank#4
- Price$0.52
- Rating4.9
- Reviews14
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The Ultimate Systematic Theology Collection: The Complete Classic Christian Doctrine of Augustine, Calvin, Aquinas & More (Grapevine Edition)
by Augustine of Hippo
- List rank#5
- Price$0.52
- Rating4.5
- Reviews2
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Surprised by Hope: Rethinking Heaven, the Resurrection, and the Mission of the Church
by N. T. Wright
- List rank#6
- Price$12.99
- Rating4.6
- Reviews2,313
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The Case for Faith: A Journalist Investigates the Toughest Objections to Christianity (Case for ... Series)
by Lee Strobel
- List rank#7
- Price$12.99
- Rating4.8
- Reviews844
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God's Word Alone---The Authority of Scripture: What the Reformers Taught...and Why It Still Matters (The Five Solas Series)
by Matthew Barrett
- List rank#8
- Price$12.99
- Rating4.8
- Reviews212
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Bible Doctrine, Second Edition: Essential Teachings of the Christian Faith
- List rank#10
- Price$38.99
- Rating4.8
- Reviews405
Same niche in Books: Systematic
FAQ
Is Systematic a good niche for Amazon KDP?
Its KDPTop opportunity score is 30/100, which makes it highly competitive. The median best seller has 182 reviews and sells for $9.99.
How many reviews do you need to rank in Systematic?
The median best seller has 182 reviews, and 39% of them have fewer than 100.
What do Systematic best sellers cost?
The median price is $9.99; half of the best sellers are priced between $4.99 and $14.99.
Can new books break into Systematic?
4% 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.