KDP categories · Top KDP authors
21st Century (Modern, Books): Amazon KDP category data
Amazon Books Best Sellers data for 21st Century (Modern, Books), updated Nov 2, 2026: median price $24.98, median 7 reviews, average rating 4.4 and a KDPTop opportunity score of 33/100 (highly competitive).
| Price range (middle 50%) | $15.79 – $32.21 |
|---|---|
| Average rating | 4.4 |
| New releases (90 days) | 7% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 3% of the parent category Modern (270), one of the easier corners under it.
- Its review barrier is lower than in 87% of Books categories: the median best seller has only 7 reviews, so new books can chart with few.
- At $24.98 its median price beats 84% of Books categories, leaving more margin per copy.
Top 10 21st Century best sellers
-
The Stranger: The Original Unabridged and Complete Edition (Albert Camus Classics)
by Albert Camus
- List rank#1
- Price$0.99
- Rating4.4
- Reviews13,065
-
The Anatomy of Genres: How Story Forms Explain the Way the World Works
by John Truby
- List rank#2
- Price$28.49
- Rating4.6
- Reviews648
-
Classic Tales of Horror - 500+ Stories
by Ambrose Bierce
- List rank#3
- Price$0.99
- Rating4.7
- Reviews1,778
-
How to Be Alone: Essays
by Jonathan Franzen
- List rank#4
- Price$2.99
- Rating4.0
- Reviews433
-
Close Reading for the Twenty-First Century (Skills for Scholars)
by Dan Sinykin
- List rank#5
- Price$19.97
- Rating4.3
- Reviews13
-
The Dark Enlightenment - Imperium Press
by Nick Land
- List rank#6
- Price$26.62
- Rating4.2
- Reviews78
-
After Oscar: The Legacy of a Scandal
by Merlin Holland
- List rank#7
- Price$29.46
- Rating4.6
- Reviews63
-
Allegory and Ideology
- List rank#8
- Price$29.95
- Rating4.3
- Reviews20
-
On Writing and Failure: Or, On the Peculiar Perseverance Required to Endure the Life of a Writer (Field Notes)
by Stephen Marche
- List rank#9
- Price$10.12
- Rating4.6
- Reviews120
-
New Perspectives on Cormac McCarthy: Encountering The Passenger and Stella Maris
by Jonathan Elmore
- List rank#10
- Price$19.24
- Rating5.0
- Reviews2
FAQ
Is 21st Century a good niche for Amazon KDP?
Its KDPTop opportunity score is 33/100, which makes it highly competitive. The median best seller has 7 reviews and sells for $24.98.
How many reviews do you need to rank in 21st Century?
The median best seller has 7 reviews, and 91% of them have fewer than 100.
What do 21st Century best sellers cost?
The median price is $24.98; half of the best sellers are priced between $15.79 and $32.21.
Can new books break into 21st Century?
7% 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.