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20th Century (Modern (16th-21st Centuries), Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for 20th Century (Modern (16th-21st Centuries), Kindle eBooks), updated Nov 3, 2026: median price $9.99, median 1,184 reviews, average rating 4.5 and a KDPTop opportunity score of 21/100 (highly competitive).
| Price range (middle 50%) | $2.99 – $14.99 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 6% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its review barrier is higher than in 89% of Kindle eBooks categories: the median best seller has 1,184 reviews, so new books need time to build up.
- Prices spread wide: the middle half runs from $2.99 to $14.99, so budget editions and premium or boxed sets sell side by side.
Top 10 20th Century best sellers
-
Redwood: The Untold Story of the Cold War's Most Extraordinary Spy
- List rank#1
- Price$14.99
- Rating4.6
- Reviews412
-
The Victors: Eisenhower And His Boys The Men Of World War Ii
- List rank#2
- Price$2.99
- Rating4.6
- Reviews803
-
The Long Gray Line: The American Journey of West Point's Class of 1966
- List rank#3
- Price$14.99
- Rating4.6
- Reviews1,123
-
A Writer at War: A Soviet Journalist with the Red Army, 1941-1945
by Vasily Grossman
- List rank#4
- Price$10.99
- Rating4.6
- Reviews603
-
The Day the World Came to Town: 9/11 in Gander, Newfoundland
by Jim DeFede
- List rank#5
- Price$7.99
- Rating4.5
- Reviews15,756
-
Ethel Kennedy: The Extraordinary Life and Bold Legacy
- List rank#6
- Price$14.99
- Rating4.6
- Reviews132
-
The Spy and the Traitor: The Greatest Espionage Story of the Cold War
- List rank#7
- Price$6.99
- Rating4.7
- Reviews37,565
-
White Eagle, Red Star: The Polish-Soviet War 1919-20
by Norman Davies
- List rank#8
- Price$2.99
- Rating4.4
- Reviews181
-
Auschwitz and After
by Charlotte Delbo
- List rank#9
- Price$1.99
- Rating4.5
- Reviews97
-
The First World War: A Complete History
by Martin Gilbert
- List rank#10
- Price$1.99
- Rating4.6
- Reviews1,302
FAQ
Is 20th Century a good niche for Amazon KDP?
Its KDPTop opportunity score is 21/100, which makes it highly competitive. The median best seller has 1,184 reviews and sells for $9.99.
How many reviews do you need to rank in 20th Century?
The median best seller has 1,184 reviews, and 12% of them have fewer than 100.
What do 20th Century best sellers cost?
The median price is $9.99; half of the best sellers are priced between $2.99 and $14.99.
Can new books break into 20th Century?
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.