KDP categories · Top KDP authors
Penology: Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Penology, updated Nov 2, 2026: median price $9.71, median 156 reviews, average rating 4.5 and a KDPTop opportunity score of 20/100 (highly competitive).
| Price range (middle 50%) | $3.99 – $12.99 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 6% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 14% of the parent category Crime & Criminals (1,127), one of the easier corners under it.
- Prices spread wide: the middle half runs from $3.99 to $12.99, so budget editions and premium or boxed sets sell side by side.
Top 10 Penology best sellers
-
Just Mercy: A Story of Justice and Redemption (One World Essentials)
- List rank#1
- Price$4.99
- Rating4.8
- Reviews40,552
-
The Innocent Man: Murder and Injustice in a Small Town
by John Grisham
- List rank#2
- Price$8.99
- Rating4.3
- Reviews14,893
-
KL: A History of the Nazi Concentration Camps
by Nikolaus Wachsmann
- List rank#3
- Price$17.95
- Rating4.7
- Reviews1,018
-
![The Gulag Archipelago [Volume 1]: An Experiment in Literary Investigation book cover by Aleksandr Solzhenitsyn](https://images-na.ssl-images-amazon.com/images/I/71m4x9+UKHL._AC_UL300_SR300,200_.jpg)
The Gulag Archipelago [Volume 1]: An Experiment in Literary Investigation
by Aleksandr Solzhenitsyn
- List rank#4
- Price$11.99
- Rating4.8
- Reviews5,485
-
The Sun Does Shine: How I Found Life and Freedom on Death Row (Oprah's Book Club Selection)
by Anthony Ray Hinton
- List rank#5
- Price$12.99
- Rating4.8
- Reviews11,508
-
Sitting on Death Row : The Most Notorious Cases of Death Row Killers - Vol. 3 (True Crime Death Penalty Cases Book 4)
by Jack Smith
- List rank#6
- Price$0.99
- Rating4.0
- Reviews16
-
The Faithful Executioner: Life and Death, Honor and Shame in the Turbulent Sixteenth Century
by Joel F. Harrington
- List rank#7
- Price$9.78
- Rating4.4
- Reviews941
-
Zero Night: The Untold Story of World War Two's Greatest Escape
by Mark Felton
- List rank#8
- Price$11.99
- Rating4.5
- Reviews568
-
A Hangman's Diary: The Journal of Master Franz Schmidt, Public Executioner of Nuremberg, 1573?1617
by Franz Schmidt
- List rank#9
- Price$10.99
- Rating4.4
- Reviews581
-
Freedom Is a Constant Struggle: Ferguson, Palestine, and the Foundations of a Movement
by Angela Y. Davis
- List rank#10
- Price$9.41
- Rating4.7
- Reviews2,591
FAQ
Is Penology a good niche for Amazon KDP?
Its KDPTop opportunity score is 20/100, which makes it highly competitive. The median best seller has 156 reviews and sells for $9.71.
How many reviews do you need to rank in Penology?
The median best seller has 156 reviews, and 41% of them have fewer than 100.
What do Penology best sellers cost?
The median price is $9.71; half of the best sellers are priced between $3.99 and $12.99.
Can new books break into Penology?
6% 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.