KDP categories · Top KDP authors
Judicial System: Amazon KDP category data
Amazon Books Best Sellers data for Judicial System, updated Nov 2, 2026: median price $19, median 18 reviews, average rating 4.6 and a KDPTop opportunity score of 29/100 (highly competitive).
| Price range (middle 50%) | $14.77 – $28.77 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 3% |
| Books on the list | 99 |
| Store | Books |
What stands out
- Its median reviews are 10% of the parent category Legal Theory & Systems (174), one of the easier corners under it.
- Only 3% of its best sellers are under 90 days old, fewer than in 83% of Books categories: established titles hold the list.
- Its review barrier is lower than in 75% of Books categories: the median best seller has only 18 reviews, so new books can chart with few.
Top 10 Judicial System best sellers
-
The U.S. Constitution: A Comprehensive and Annotated Guide for the Modern Reader
by Melissa Murray
- List rank#1
- Price$16.59
- Rating4.8
- Reviews438
-
Supremacy: How Rule by the Court Replaced Government by the People
- List rank#2
- Price$29.79
- Rating4.6
- Reviews21
-
The Shadow Docket: How the Supreme Court Uses Stealth Rulings to Amass Power and Undermine the Republic
by Stephen Vladeck
- List rank#3
- Price$1.99
- Rating4.6
- Reviews441
-
The Political Supreme Court: A Forgotten History
- List rank#4
- Price$22.09
- Reviews-
-
The Power of Our Supreme Court: How Supreme Court Cases Shape Democracy
by Matt Beat
- List rank#5
- Price$15.99
- Rating4.7
- Reviews39
-
Scalia: Supreme Court Years, 1986 to 2001
by James Rosen
- List rank#6
- Price$19.99
- Rating4.8
- Reviews88
-
Last Branch Standing: A Potentially Surprising, Occasionally Witty Journey Inside Today's Supreme Court
by Sarah Isgur
- List rank#7
- Price$18.09
- Rating4.6
- Reviews423
-
Lawless: How the Supreme Court Runs on Conservative Grievance, Fringe Theories, and Bad Vibes
by Leah Litman
- List rank#8
- Price$4.92
- Rating4.6
- Reviews387
-
Scalia: Rise to Greatness: 1936 - 1986
by James Rosen
- List rank#9
- Price$21.71
- Rating4.7
- Reviews259
-
The Trial: The Assassination of President Lincoln and the Trial of the Conspirators
by Edward Steers Jr.
- List rank#10
- Price$11.99
- Rating4.3
- Reviews48
FAQ
Is Judicial System a good niche for Amazon KDP?
Its KDPTop opportunity score is 29/100, which makes it highly competitive. The median best seller has 18 reviews and sells for $19.
How many reviews do you need to rank in Judicial System?
The median best seller has 18 reviews, and 83% of them have fewer than 100.
What do Judicial System best sellers cost?
The median price is $19; half of the best sellers are priced between $14.77 and $28.77.
Can new books break into Judicial System?
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.