KDP categories · Top KDP authors
Gemma Files: Amazon KDP author data
As of Nov 6, 2026, Gemma Files has 15 books on Amazon, 1 of them on a best-seller list in the last 30 days (best rank #3), mostly in Anthologies, Science Fiction, Dark Fantasy.
| Median price | $7.47 |
|---|---|
| Price range (middle 50%) | $4.99 – $14.29 |
| Median reviews | 20 |
| Total reviews | 972 |
| New books (30 days) | 1 |
| Breakout books (30 days) | 1 |
What stands out
- Only 7% of the catalog charted in the last 30 days; sales rest on a few titles.
- Median price $7.47, 61% below the median of their main category, Anthologies.
Gemma Files's best-ranked books
-
Grimdark Magazine Issue #48
by Gemma Files
- Price$3.99
- Rating3.6
- Reviews45
- Published2026-10
-
Children of Lovecraft
by Gemma Files
- Price$3.99
- Rating4.1
- Reviews250
- Published2023-02
-
Fearful Symmetries
by Gemma Files
- Price$0
- Rating4.1
- Reviews349
- Published2020-07
-
Other Voices, Other Tombs
by Gemma Files
- Price$0
- Rating4.1
- Reviews100
- Published2019-07
-
Kissing Carrion: Stories
by Gemma Files
- Price$19.99
- Rating4.2
- Reviews60
- Published2026-09
-
We Will All Go Down Together
by Gemma Files
- Price$22.27
- Rating4.2
- Reviews55
- Published2014-11
-
Black Seas of Infinity: The R'lyeh Cycle Book Two
by Gemma Files
- Price$6.95
- Rating4.4
- Reviews35
- Published2024-07
-
Other Voices, Other Tombs
by Gemma Files
- Price$15.24
- Rating4.4
- Reviews20
- Published2019-07
-
Clockwork Phoenix 2: More Tales of Beauty and Strangeness
by Gemma Files
- Price$4.99
- Rating4.0
- Reviews15
- Published2012-03
-
Clockwork Phoenix 4
by Gemma Files
- Price$5.99
- Rating4.2
- Reviews11
- Published2013-06
Main categories
FAQ
How many books does Gemma Files have on Amazon?
KDPTop tracks 15 of their books; 1 made an Amazon list in the last 30 days.
Which categories does Gemma Files publish in?
Their books chart most often in Anthologies, Science Fiction, Dark Fantasy.
How does Gemma Files price their books?
The median price is $7.47; half of the books cost $4.99–$14.29.
Has Gemma Files released new books recently?
1 new book in the last 30 days, 1 of which reached a Best Sellers list.
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.