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Gregory Koukl: Amazon KDP author data
As of Nov 6, 2026, Gregory Koukl has 11 books on Amazon, 7 of them on a best-seller list in the last 30 days (best rank #5), mostly in Religion, Apologetics, Discipleship.
| Median price | $10.49 |
|---|---|
| Price range (middle 50%) | $9.28 – $13.89 |
| Median reviews | 588 |
| Total reviews | 18,940 |
| New listings (30 days, incl. new editions) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- 64% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $10.49, 76% above the median of their main category, Religion.
Gregory Koukl's best-ranked books
-
Tactics, 10th Anniversary Edition: A Game Plan for Discussing Your Christian Convictions
by Gregory Koukl
- Price$9.98
- Rating4.8
- Reviews6,500
-
Tactics, 10th Anniversary Edition: A Game Plan for Discussing Your Christian Convictions
by Gregory Koukl
- Price$1.99
- Rating4.8
- Reviews6,501
- Published2019-11
-
Street Smarts: Using Questions to Answer Christianity's Toughest Challenges
by Gregory Koukl
- Price$14.99
- Rating4.8
- Reviews589
-
Street Smarts: Using Questions to Answer Christianity's Toughest Challenges
by Gregory Koukl
- Price$12.79
- Rating4.8
- Reviews589
-
The Story of Reality: How the World Began, How It Ends, and Everything Important that Happens in Between
by Gregory Koukl
- Price$11.99
- Rating4.7
- Reviews1,707
- Published2017-01
-
The Story of Reality: How the World Began, How It Ends, and Everything Important that Happens in Between
by Gregory Koukl
- Price$8.57
- Rating4.7
- Reviews1,707
-
Street Smarts: Using Questions to Answer Christianity's Toughest Challenges
by Gregory Koukl
- Price$23.59
- Rating4.8
- Reviews589
-
Tácticas: Un plan de acción para debatir tus convicciones cristianas (Spanish Edition)
by Gregory Koukl
- Price$10.49
- Rating4.8
- Reviews332
- Published2018-06
-
Tactics Study Guide, Updated and Expanded: A Guide to Effectively Discussing Your Christian Convictions
by Gregory Koukl
- Price$9.85
- Rating4.8
- Reviews326
-
"Misquoting" Jesus? Answering Bart Ehrman (Solid Ground)
by Gregory Koukl
- Price$0.99
- Rating4.2
- Reviews94
Main categories
FAQ
How many books does Gregory Koukl have on Amazon?
KDPTop tracks 11 of their books; 7 made an Amazon list in the last 30 days.
Which categories does Gregory Koukl publish in?
Their books chart most often in Religion, Apologetics, Discipleship.
How does Gregory Koukl price their books?
The median price is $10.49; half of the books cost $9.28–$13.89.
Has Gregory Koukl released new books recently?
0 new books in the last 30 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.