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Galactic Empire (Science Fiction, Books): Amazon KDP category data
Amazon Books Best Sellers data for Galactic Empire (Science Fiction, Books), updated Nov 2, 2026: median price $5.99, median 978 reviews, average rating 4.5 and a KDPTop opportunity score of 30/100 (highly competitive).
| Price range (middle 50%) | $4.49 – $8.99 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 45% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 3% of the parent category Science Fiction (30,843), one of the easier corners under it.
- 45% of its best sellers came out in the last 90 days, more than in 99% of Books categories: readers here keep buying new titles.
- At $5.99 its median price is below 98% of Books categories, so it is a volume game.
Top 10 Galactic Empire best sellers
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Morning Star (Red Rising Series Book 3)
by Pierce Brown
- List rank#3
- Price$12.99
- Rating4.7
- Reviews62,292
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I’m a Destroyer: A Sentient AI Warship Military Sci-Fi Adventure (I, Warship Book 1)
by Sean Robins
- List rank#4
- Price$0.99
- Rating4.4
- Reviews257
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Empire of Silence: The Sun Eater: Book One
- List rank#6
- Price$9.99
- Rating4.4
- Reviews11,710
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Tavalai Rebellion: (The Spiral Wars Book 11)
by Joel Shepherd
- List rank#7
- Price$5.99
- Rating4.7
- Reviews18
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House of Blades: A Space Opera Epic (Gates of Babylon Book 1)
by Joshua Dalzelle
- List rank#10
- Price$8.99
- Rating4.6
- Reviews127
Same niche in Kindle eBooks: Galactic Empire
FAQ
Is Galactic Empire a good niche for Amazon KDP?
Its KDPTop opportunity score is 30/100, which makes it highly competitive. The median best seller has 978 reviews and sells for $5.99.
How many reviews do you need to rank in Galactic Empire?
The median best seller has 978 reviews, and 15% of them have fewer than 100.
What do Galactic Empire best sellers cost?
The median price is $5.99; half of the best sellers are priced between $4.49 and $8.99.
Can new books break into Galactic Empire?
45% 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.