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Aliens (Science Fiction, Books): Amazon KDP category data
Amazon Books Best Sellers data for Aliens (Science Fiction, Books), updated Nov 2, 2026: median price $11.53, median 4,084 reviews, average rating 4.5 and a KDPTop opportunity score of 27/100 (highly competitive).
| Price range (middle 50%) | $8.38 – $17.50 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 7% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its review barrier is higher than in 96% of Books categories: the median best seller has 4,084 reviews, so new books need time to build up.
- Its median reviews are 47% of the parent category Science Fiction (8,600), one of the easier corners under it.
- At $11.53 its median price is below 84% of Books categories, so it is a volume game.
Top 10 Aliens best sellers
-
Skyward (The Skyward Series Book 1)
- List rank#1
- Price$7.99
- Rating4.7
- Reviews23,389
-
I’m a Destroyer: A Sentient AI Warship Military Sci-Fi Adventure (I, Warship Book 1)
by Sean Robins
- List rank#2
- Price$0.99
- Rating4.4
- Reviews257
-
Imagine Me (Shatter Me: Series One Book 6)
by Tahereh Mafi
- List rank#3
- Price$2.99
- Rating4.5
- Reviews16,274
-
Ender's Game (The Ender Saga, 1)
- List rank#4
- Price$12.96
- Rating4.6
- Reviews45,944
-
The Little Prince: The Timeless Classic with a Touch of Wonder, Experience the Beauty of Seeing with the Heart
- List rank#5
- Price$11.54
- Rating4.8
- Reviews1,831
-
The Little Prince
- List rank#6
- Price$8.09
- Rating4.8
- Reviews9,399
-
Now We Are Animals: Enthralling and thought-provoking Dystopian YA (The Colonists: Now We Are Animals Book 1)
by R P Nathan
- List rank#7
- Price$2.99
- Rating4.4
- Reviews1,052
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Cinder (The Lunar Chronicles Book 1)
- List rank#10
- Price$9.99
- Rating4.5
- Reviews21,486
FAQ
Is Aliens a good niche for Amazon KDP?
Its KDPTop opportunity score is 27/100, which makes it highly competitive. The median best seller has 4,084 reviews and sells for $11.53.
How many reviews do you need to rank in Aliens?
The median best seller has 4,084 reviews, and 8% of them have fewer than 100.
What do Aliens best sellers cost?
The median price is $11.53; half of the best sellers are priced between $8.38 and $17.50.
Can new books break into Aliens?
7% 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.