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20th Century (Historical Romance, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for 20th Century (Historical Romance, Kindle eBooks), updated Nov 2, 2026: median price $4.99, median 6,467 reviews, average rating 4.5 and a KDPTop opportunity score of 18/100 (highly competitive).
| Price range (middle 50%) | $2.99 – $8.99 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 15% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 9.1× those of the parent category Historical Romance, harder to enter than the parent as a whole.
- Its review barrier is higher than in 98% of Kindle eBooks categories: the median best seller has 6,467 reviews, so new books need time to build up.
- At $4.99 its median price is below 91% of Kindle eBooks categories, so it is a volume game.
Top 10 20th Century best sellers
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Where the Sea Lavender Grows: A Novel
by Kitty Johnson
- List rank#2
- Price$4.99
- Rating4.5
- Reviews26,503
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The Forgotten Bookshop in Paris: The must-read emotional WW2 historical fiction novel for book lovers, perfect for fans of Kate Quinn and Jennifer Chiaverini
by Daisy Wood
- List rank#3
- Price$0.99
- Rating4.6
- Reviews18,058
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The Sky Beneath Her: A Novel
- List rank#5
- Price$5.99
- Rating4.5
- Reviews20,064
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Rebecca
by Daphne du Maurier
- List rank#6
- Price$13.99
- Rating4.4
- Reviews35,302
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The Underground Bakery: Completely gripping and heart-wrenching World War 2 historical fiction
by Gosia Nealon
- List rank#7
- Price$0.99
- Rating4.6
- Reviews20
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Adam and Eve: The new unforgettable novel from the master storyteller – a gripping WWII historical fiction novel for 2026
- List rank#8
- Price$14.99
- Rating4.6
- Reviews1,780
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The Things We Cannot Say: A WWII Historical Fiction Novel – A NYT Bestseller Romance Drama of Polish Courage
by Kelly Rimmer
- List rank#9
- Price$11.99
- Rating4.7
- Reviews66,314
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The Club for Rebellious Ladies: A totally unputdownable dual timeline historical novel of friendship, romance and secrets
by Siobhan Curham
- List rank#10
- Price$3.99
- Rating4.4
- Reviews710
Same niche in Books: 20th Century
FAQ
Is 20th Century a good niche for Amazon KDP?
Its KDPTop opportunity score is 18/100, which makes it highly competitive. The median best seller has 6,467 reviews and sells for $4.99.
How many reviews do you need to rank in 20th Century?
The median best seller has 6,467 reviews, and 6% of them have fewer than 100.
What do 20th Century best sellers cost?
The median price is $4.99; half of the best sellers are priced between $2.99 and $8.99.
Can new books break into 20th Century?
15% 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.