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Galactic Empire (Science Fiction, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Galactic Empire (Science Fiction, Kindle eBooks), updated Nov 3, 2026: median price $5.49, median 828 reviews, average rating 4.5 and a KDPTop opportunity score of 31/100 (highly competitive).
| Price range (middle 50%) | $4.74 – $7.99 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 49% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 7% of the parent category Science Fiction (11,570), one of the easier corners under it.
- 49% of its best sellers came out in the last 90 days, more than in 99% of Kindle eBooks categories: readers here keep buying new titles.
- Its review barrier is higher than in 85% of Kindle eBooks categories: the median best seller has 828 reviews, so new books need time to build up.
Top 10 Galactic Empire best sellers
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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#3
- Price$0.99
- Rating4.4
- Reviews257
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House of Blades: A Space Opera Epic (Gates of Babylon Book 1)
by Joshua Dalzelle
- List rank#6
- Price$8.99
- Rating4.6
- Reviews127
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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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Starship Ranger
by Reece Landon
- List rank#8
- Price$4.99
- Rating4.5
- Reviews295
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Imperial Commander: Decline and Fall of the Galactic Empire Book 8
by Andrew Moriarty
- List rank#10
- Price$7.99
- Rating4.8
- Reviews31
Same niche in Books: Galactic Empire
FAQ
Is Galactic Empire a good niche for Amazon KDP?
Its KDPTop opportunity score is 31/100, which makes it highly competitive. The median best seller has 828 reviews and sells for $5.49.
How many reviews do you need to rank in Galactic Empire?
The median best seller has 828 reviews, and 13% of them have fewer than 100.
What do Galactic Empire best sellers cost?
The median price is $5.49; half of the best sellers are priced between $4.74 and $7.99.
Can new books break into Galactic Empire?
49% 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.