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Science Fiction & Fantasy (Encyclopedias & Subject Guides, Books): Amazon KDP category data
Amazon Books Best Sellers data for Science Fiction & Fantasy (Encyclopedias & Subject Guides, Books), updated Nov 3, 2026: median price $23.98, median 208 reviews, average rating 4.7 and a KDPTop opportunity score of 29/100 (highly competitive).
| Price range (middle 50%) | $15.98 – $28.88 |
|---|---|
| Average rating | 4.7 |
| New releases (90 days) | 9% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 11% of the parent category Encyclopedias & Subject Guides (1,970), one of the easier corners under it.
- At $23.98 its median price beats 82% of Books categories, leaving more margin per copy.
Top 10 Science Fiction & Fantasy best sellers
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The Road
- List rank#1
- Price$13.39
- Rating4.4
- Reviews39,887
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The Ultimate Unofficial Encyclopedia for Minecrafters (Revised and Updated 2023): An A–Z Book of Tips and Tricks the Official Guides Don't Teach You
by Megan Miller
- List rank#3
- Price$11.56
- Rating4.6
- Reviews5,518
-
Star Wars: The Visual Encyclopedia
by Adam Bray
- List rank#4
- Price$19.98
- Rating4.8
- Reviews1,990
-
The Book of Mythical Beasts and Magical Creatures (Mysteries, Magic and Myth)
by DK
- List rank#5
- Price$13.30
- Rating4.8
- Reviews2,136
-
Emily Wilde's Encyclopaedia of Faeries
- List rank#6
- Price$10.34
- Rating4.3
- Reviews14,287
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Warhammer 40,000 Character Encyclopedia: Includes Lieutenant Titus Miniature
by Wade Pryce
- List rank#7
- Price$25.49
- Rating4.5
- Reviews961
-
Pembrick's Creaturepedia (The Wingfeather Saga)
- List rank#8
- Price$9.09
- Rating4.8
- Reviews939
-
The Harry Potter Wizarding Almanac: The Official Magical Companion to J.K. Rowling's Harry Potter Books
- List rank#9
- Price$22.68
- Rating4.9
- Reviews2,282
-
Warhammer 40,000 The Ultimate Guide
by Gavin Thorpe
- List rank#10
- Price$25.68
- Rating4.7
- Reviews1,237
FAQ
Is Science Fiction & Fantasy a good niche for Amazon KDP?
Its KDPTop opportunity score is 29/100, which makes it highly competitive. The median best seller has 208 reviews and sells for $23.98.
How many reviews do you need to rank in Science Fiction & Fantasy?
The median best seller has 208 reviews, and 34% of them have fewer than 100.
What do Science Fiction & Fantasy best sellers cost?
The median price is $23.98; half of the best sellers are priced between $15.98 and $28.88.
Can new books break into Science Fiction & Fantasy?
9% 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.