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21st Century (Modern (16th-21st Centuries), Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for 21st Century (Modern (16th-21st Centuries), Kindle eBooks), updated Nov 2, 2026: median price $9.99, median 401 reviews, average rating 4.5 and a KDPTop opportunity score of 19/100 (highly competitive).
| Price range (middle 50%) | $4.99 – $13.99 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 11% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 43% of the parent category Modern (16th-21st Centuries) (943), one of the easier corners under it.
- Its review barrier is higher than in 78% of Kindle eBooks categories: the median best seller has 401 reviews, so new books need time to build up.
- Prices spread wide: the middle half runs from $4.99 to $13.99, so budget editions and premium or boxed sets sell side by side.
Top 10 21st Century best sellers
-
The Shock Doctrine: The Rise of Disaster Capitalism
by Naomi Klein
- List rank#1
- Price$2.99
- Rating4.7
- Reviews3,594
-
The Day the World Came to Town: 9/11 in Gander, Newfoundland
by Jim DeFede
- List rank#2
- Price$7.99
- Rating4.5
- Reviews15,756
-
India After Gandhi: The History of the World's Largest Democracy
by Ramachandra Guha
- List rank#3
- Price$16.13
- Rating4.6
- Reviews4,151
-
True North: On the Road in Canada – An Acclaimed Memoir of Landscapes, Ancestral Connections, and Cultural Identity
by Paul Theroux
- List rank#4
- Price$14.99
- Rating4.3
- Reviews76
-
King Leopold's Ghost: A Story of Greed, Terror, and Heroism in Colonial Africa
- List rank#5
- Price$13.99
- Rating4.6
- Reviews6,287
-
How Did We Get Here?: From Theodore Roosevelt to Donald Trump
by Robert Dallek
- List rank#6
- Price$1.99
- Rating4.1
- Reviews114
-
Stasiland: Stories from Behind the Berlin Wall
by Anna Funder
- List rank#7
- Price$7.99
- Rating4.4
- Reviews3,262
-
21 Lessons for the 21st Century
- List rank#8
- Price$10.99
- Rating4.6
- Reviews20,375
-
Cher: Part One: The Memoir – An Intimate and Extraordinary Story of a Trailblazing Icon Who Topped Billboard for Seven Decades (The Cher Memoir Book 1)
by Cher
- List rank#9
- Price$15.49
- Rating4.6
- Reviews9,132
-
The Bin Laden Papers: How the Abbottabad Raid Revealed the Truth about al-Qaeda, Its Leader and His Family
by Nelly Lahoud
- List rank#10
- Price$2.99
- Rating4.4
- Reviews182
FAQ
Is 21st Century a good niche for Amazon KDP?
Its KDPTop opportunity score is 19/100, which makes it highly competitive. The median best seller has 401 reviews and sells for $9.99.
How many reviews do you need to rank in 21st Century?
The median best seller has 401 reviews, and 29% of them have fewer than 100.
What do 21st Century best sellers cost?
The median price is $9.99; half of the best sellers are priced between $4.99 and $13.99.
Can new books break into 21st Century?
11% 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.