KDP categories · Top KDP authors
J J Green: Amazon KDP author data
As of Nov 6, 2026, J J Green has 13 books on Amazon, 7 of them on a best-seller list in the last 30 days, mostly in Space Opera, Military, Adventure.
| Median price | $5.99 |
|---|---|
| Price range (middle 50%) | $0.99 – $16.99 |
| Median reviews | 234 |
| Total reviews | 7,250 |
| New books (30 days) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- 54% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $5.99, 20% above the median of their main category, Space Opera.
J J Green's best-ranked books
-
Space Colony One Books 1 - 3 (SPACE COLONY ONE SERIES)
by J J Green
- Price$0
- Rating4.3
- Reviews2,760
- Published2021-09
-
Future Adventures: Eight Complete Adventure Science Fiction Novels
by J J Green
- Price$0
- Rating4.1
- Reviews1,264
- Published2019-09
-
Savage Stars: 6 Novels of Space Opera, Aliens, AI, and Post Apocalyptic Adventure
by J J Green
- Price$0
- Rating4.3
- Reviews919
- Published2020-01
-
Star Mage Quest - A Dark Space Fantasy (Star Mage Saga Book 1)
by J J Green
- Price$0
- Rating4.2
- Reviews822
- Published2018-04
-
The Galathea Chronicles: Shadows of the Void Space Opera
by J J Green
- Price$0
- Rating4.1
- Reviews605
- Published2016-11
-
Spaceships & Dames: Nine novels of space adventure
by J J Green
- Price$0
- Rating4.3
- Reviews238
- Published2024-01
-
The Officer: Eleven Science Fiction Short Stories (Scifi Anthologies Book 2)
by J J Green
- Price$0.99
- Rating3.8
- Reviews231
- Published2017-06
-
The Guardian: Eleven science fiction short stories (Science Fiction Anthologies Book 3)
by J J Green
- Price$0.99
- Rating4.0
- Reviews218
- Published2017-11
-
Building New Canaan - The Complete Series - A Colonization and Exploration Space Adventure (Aeon 14: Building New Canaan)
by J J Green
- Price$0
- Rating4.6
- Reviews89
- Published2021-03
-
Pew! Pew! Volume 2: The Quest for More Pew!
by J J Green
- Price$18.99
- Rating4.1
- Reviews51
- Published2017-08
Main categories
FAQ
How many books does J J Green have on Amazon?
KDPTop tracks 13 of their books; 7 made an Amazon list in the last 30 days.
Which categories does J J Green publish in?
Their books chart most often in Space Opera, Military, Adventure.
How does J J Green price their books?
The median price is $5.99; half of the books cost $0.99–$16.99.
Has J J Green released new books recently?
0 new books in the last 30 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.