Space Opera Science Fiction — KDP Niche Analysis
The space opera science fiction Kindle niche scores 72/100 for opportunity — strong opportunity. On BookTrendr's signals, demand sits at 100 and competition at 40. The top books average 2,316 reviews, and kindle editions average $4.72. Below you'll find the top 10 bestsellers, 8 ranked keywords (led by "kindle"), the review barrier, pricing, and where a new book could still find an angle.
Snapshot taken 1 October 2026 — Amazon data changes daily.
Sales
14/day
Sales to #1
1/day
Sales to #10
Review barrier
Moderate
2,316 avg reviews · 4.2 ★ avg
Based on top 10 books.
Price
$4.72
Kindle avg
$140.24
Print avg
Based on top 10 books.
Market revenue
≈ $4,959
1,050 copies/mo
Estimated from top-10 BSR. Not actual Amazon sales data.
Top 10 bestsellers
Live from Amazon — cover, BSR, estimated daily sales, reviews, and price. Titles link to Amazon.
1
2
3
4
5
6
7
8
9
10
Empire's End: A Space Opera Adventure (Blue Star Enterprises Book 6)
20,088
BSR
$7.99
Price
Shards of Earth (The Final Architecture Book 1) (Volume 1)
24,488
BSR
$9.99
Price
Wings of Earth: 1 - Echoes of Starlight: A Smart Space Opera Series
161,170
BSR
$1.99
Price
Space Opera (Space Opera, The Book 1)
233,406
BSR
$9.99
Price
The First Mission: A Space Opera: Book Two of The Shadow Order (The Shadow Order - The Complete Series 2)
259,977
BSR
$0.99
Price
Galactic Terror: A Space Opera
372,746
BSR
$0.99
Price
New Adventures in Space Opera
1,082,398
BSR
$9.32
Price
The Shadow Order - Books 1 - 3: A Space Opera (The Shadow Order Box Set - The Complete Series)
4,063,255
BSR
$0.99
Price
Oblivion Threshold: A Military Science Fiction Space Opera Epic (The Oblivion Saga Book 1)
4,642,383
BSR
$3.99
Price
Forge of Empire: A Military Space Opera Tale (The Chronicle of the Final Light Book 1)
4,723,435
BSR
$0.99
Price
Est. sales/day are modelled from live BSR — a guide, not a guarantee. As an Amazon Associate we earn from qualifying purchases.
Keyword demand
Top search terms in this niche, with monthly volume and an opportunity score.
kindle
~498,990 searches/mo
kindle unlimited
~152,853 searches/mo
kindle books
~67,432 searches/mo
fantasy books
~28,311 searches/mo
romance books
~22,402 searches/mo
kindle unlimited free books
~20,383 searches/mo
space opera
~8,901 searches/mo
a memory called empire
~1,496 searches/mo
FAQ — Space Opera Science Fiction KDP niche
Is Space Opera Science Fiction a good KDP niche?
It scores 72/100 on BookTrendr's opportunity model — strong opportunity. That points to a strong mix of demand and a realistic chance to rank for a new book. Always read the full breakdown before committing.
How hard is it to rank in the space opera science fiction niche?
The review barrier is moderate — the top books average 2,316 reviews. A new book can compete with a clear angle and a solid launch.
What do books in the space opera science fiction niche sell for?
Kindle editions in the top 10 average $4.72, with print around $140.24. Use that as a pricing benchmark for a new title.
How many sales does the top book make?
The #1 book is estimated at about 14 sales/day, modelled from its live Amazon BSR. It's a guide to the ceiling of the niche, not exact Amazon sales data.
Where does the data come from?
Live Amazon bestseller and keyword data captured on 1 October 2026. Rankings, prices, and reviews change daily, so treat the figures as a research-based snapshot. Run "space opera science fiction" in BookTrendr for a fresh, deeper analysis.
This is the short version
The page above is a snapshot. Run "Space opera science fiction" — or any Kindle topic — inside BookTrendr and you get the full picture, plus tools this preview can't show:
- Live bestsellers you can re-run any time, not a fixed snapshot
- New releases — see what's launching now
- Deeper keyword research with real search volumes
- Category research — find the right BSR categories
- Reverse ASIN — reverse-engineer any competitor's keywords
- AI review analysis — what readers love and complain about
- Book ideas, angles, titles, and sub-niches
- Monitor books, authors, and niches for changes over time
No card required. 102 niches here are just examples — research any topic you like.
Related tools & guides
Opportunity score, BSR, and sales figures are modelled estimates from live Amazon and keyword data captured on the date shown. A guide, not a guarantee.