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Science Fiction (Science Fiction & Fantasy, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Science Fiction (Science Fiction & Fantasy, Kindle eBooks), updated Nov 2, 2026: median price $5.99, median 11,570 reviews, average rating 4.5 and a KDPTop opportunity score of 19/100 (highly competitive).
| Price range (middle 50%) | $3.99 – $9.99 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 29% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its review barrier is higher than in 99% of Kindle eBooks categories: the median best seller has 11,570 reviews, so new books need time to build up.
- 29% of its best sellers came out in the last 90 days, more than in 94% of Kindle eBooks categories: readers here keep buying new titles.
- Its median reviews are 27% of the parent category Science Fiction & Fantasy (42,492), one of the easier corners under it.
Top 10 Science Fiction best sellers
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House of Earth and Blood (Crescent City Book 1)
- List rank#1
- Price$9.49
- Rating4.7
- Reviews183,951
-
The Eye of the Bedlam Bride: Dungeon Crawler Carl Book 6
- List rank#2
- Price$5.99
- Rating4.8
- Reviews67,936
-
A Parade of Horribles: Dungeon Crawler Carl, Book 8
- List rank#3
- Price$6.99
- Rating4.8
- Reviews41,099
-
House of Sky and Breath (Crescent City)
- List rank#4
- Price$11.12
- Rating4.7
- Reviews148,385
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The Hitchhiker's Guide to the Galaxy: The Illustrated Edition
- List rank#7
- Price$1.99
- Rating4.3
- Reviews30,923
-
The Queen's Witch (The Tudor Witches Book 1)
by Nancy Kress
- List rank#8
- Price$4.99
- Rating4.0
- Reviews1,086
-
He Who Fights with Monsters 13: A LitRPG Adventure
by Shirtaloon
- List rank#9
- Price$7.99
- Rating4.8
- Reviews3,855
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Subcategories
- Androids, Robots & Artificial Intelligences41
- Military35
- Anthologies & Short Stories33
- Galactic Empire31
- Post-Apocalyptic28
- Space Exploration28
- Space Opera28
- Humorous25
- First Contact24
- Alien Invasion22
- Colonization22
- Dystopian22
- Metaphysical & Visionary21
- Hard Science Fiction21
- Genetic Engineering20
- TV, Movie, Video Game Adaptations18
- Steampunk18
- Cyberpunk15
- Classics15
Same niche in Books: Science Fiction
FAQ
Is Science Fiction a good niche for Amazon KDP?
Its KDPTop opportunity score is 19/100, which makes it highly competitive. The median best seller has 11,570 reviews and sells for $5.99.
How many reviews do you need to rank in Science Fiction?
The median best seller has 11,570 reviews, and 15% of them have fewer than 100.
What do Science Fiction best sellers cost?
The median price is $5.99; half of the best sellers are priced between $3.99 and $9.99.
Can new books break into Science Fiction?
29% 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.