KDP categories · Top KDP authors
Comparative (Legal Theory & Systems, Books): Amazon KDP category data
Amazon Books Best Sellers data for Comparative (Legal Theory & Systems, Books), updated Nov 3, 2026: median price $44.45, median 2 reviews, average rating 4.6 and a KDPTop opportunity score of 29/100 (highly competitive).
| Price range (middle 50%) | $22 – $67.87 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 9% |
| Books on the list | 98 |
| Store | Books |
What stands out
- Its median reviews are 1% of the parent category Legal Theory & Systems (174), one of the easier corners under it.
- Its review barrier is lower than in 96% of Books categories: the median best seller has only 2 reviews, so new books can chart with few.
- At $44.45 its median price beats 95% of Books categories, leaving more margin per copy.
Top 10 Comparative best sellers
-
War Against All Puerto Ricans: Revolution and Terror in America's Colony
by Nelson A Denis
- List rank#1
- Price$15.07
- Rating4.8
- Reviews3,924
-
Hitler's American Model: The United States and the Making of Nazi Race Law
by James Q. Whitman
- List rank#2
- Price$13.93
- Rating4.6
- Reviews576
-
William Blackstone's Commentaries on the Laws of England: Modernized and Condensed: Book I, II, III, and IV
by William Blackstone
- List rank#3
- Price$5.99
- Rating4.6
- Reviews3
-
Antisemitism and the Law
by Robert Katz
- List rank#4
- Price$47.04
- Rating5.0
- Reviews3
-
First Steps in the Law
by Geoffrey Rivlin
- List rank#5
- Price$31.99
- Rating4.8
- Reviews72
-
The Civil Law Tradition: An Introduction to the Legal Systems of Europe and Latin America, Fourth Edition
by John Merryman
- List rank#6
- Price$18.08
- Rating4.6
- Reviews29
-
Comparative Criminal Justice Systems
by Harry R. Dammer
- List rank#7
- Price$77.49
- Rating4.5
- Reviews234
-
The Brussels Effect: How the European Union Rules the World
by Anu Bradford
- List rank#8
- Price$13.19
- Rating4.5
- Reviews141
-
International Business Law and the Legal Environment: A Transactional Approach
by Larry A. DiMatteo
- List rank#9
- Price$59.72
- Rating5.0
- Reviews1
-
DINA DE-GARMEI: Ramban’s Treatise on Liability for Consequential Damage
by Moshe ben Nachman
- List rank#10
- Price$14.09
- Rating5.0
- Reviews1
FAQ
Is Comparative a good niche for Amazon KDP?
Its KDPTop opportunity score is 29/100, which makes it highly competitive. The median best seller has 2 reviews and sells for $44.45.
How many reviews do you need to rank in Comparative?
The median best seller has 2 reviews, and 96% of them have fewer than 100.
What do Comparative best sellers cost?
The median price is $44.45; half of the best sellers are priced between $22 and $67.87.
Can new books break into Comparative?
9% 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.