KDP categories · Top KDP authors
Exploration (Science Fiction, Books): Amazon KDP category data
Amazon Books Best Sellers data for Exploration (Science Fiction, Books), updated Nov 3, 2026: median price $7.99, median 2,257 reviews, average rating 4.5 and a KDPTop opportunity score of 29/100 (highly competitive).
| Price range (middle 50%) | $4.74 – $19.31 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 35% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 7% of the parent category Science Fiction (30,843), one of the easier corners under it.
- 35% of its best sellers came out in the last 90 days, more than in 98% of Books categories: readers here keep buying new titles.
- Its review barrier is higher than in 93% of Books categories: the median best seller has 2,257 reviews, so new books need time to build up.
Top 10 Exploration best sellers
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The Infinite Extent: Bobiverse, Book 6
- List rank#2
- Price$15.49
- Rating4.5
- Reviews30
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Children of Time: Children of Time, Book 1
- List rank#5
- Price$21.99
- Rating4.5
- Reviews51,769
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Not Till We Are Lost: Bobiverse, Book 5
- List rank#6
- Price$18.47
- Rating4.6
- Reviews8,907
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Leviathan Wakes
- List rank#7
- Price$37.19
- Rating4.6
- Reviews60,925
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We Are Legion (We Are Bob) (Bobiverse Book 1)
by Dennis Taylor
- List rank#9
- Price$9.99
- Rating4.5
- Reviews35,050
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Engineer of the Exotic (The Saucer Series Book 1)
- List rank#10
- Price$2.99
- Rating4.4
- Reviews802
Same niche in Kindle eBooks: Space Exploration
FAQ
Is Exploration a good niche for Amazon KDP?
Its KDPTop opportunity score is 29/100, which makes it highly competitive. The median best seller has 2,257 reviews and sells for $7.99.
How many reviews do you need to rank in Exploration?
The median best seller has 2,257 reviews, and 15% of them have fewer than 100.
What do Exploration best sellers cost?
The median price is $7.99; half of the best sellers are priced between $4.74 and $19.31.
Can new books break into Exploration?
35% 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.