KDP categories · Top KDP authors
Gerald M. Kilby: Amazon KDP author data
As of Nov 6, 2026, Gerald M. Kilby has 20 books on Amazon, 12 of them on a best-seller list in the last 30 days (best rank #18), mostly in Fantasy, Horror & Science Fiction, Genetic Engineering, Hard Science Fiction.
| Median price | $4.99 |
|---|---|
| Price range (middle 50%) | $2.99 – $4.99 |
| Median reviews | 984 |
| Total reviews | 44,503 |
| New listings (30 days, incl. new editions) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- 60% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $4.99, 38% below the median of their main category, Fantasy, Horror & Science Fiction.
Gerald M. Kilby's best-ranked books
-
Émergence (La Ceinture t. 6) (French Edition)
by Gerald M. Kilby
- Price$4.99
- Rating4.6
- Reviews406
-
Énigme (La Ceinture t. 4) (French Edition)
by Gerald M. Kilby
- Price$4.99
- Rating4.5
- Reviews357
-
EXODE (La Ceinture t. 5) (French Edition)
by Gerald M. Kilby
- Price$4.99
- Rating4.5
- Reviews354
-
Évolution (La Ceinture t. 3) (French Edition)
by Gerald M. Kilby
- Price$4.99
- Rating4.5
- Reviews428
-
Entropie (La Ceinture t. 2) (French Edition)
by Gerald M. Kilby
- Price$4.99
- Rating4.4
- Reviews463
-
Intrication: La Ceinture (French Edition)
by Gerald M. Kilby
- Price$2.99
- Rating4.2
- Reviews642
-
Colony One Mars: Fast Paced Scifi Thriller (Colony Mars Series Book 1)
by Gerald M. Kilby
- Price$2.99
- Rating4.3
- Reviews10,632
- Published2016-03
-
Marte Colonia Uno (Italian Edition)
by Gerald M. Kilby
- Price$2.99
- Rating4.3
- Reviews105
-
Shadow of Elysium: Colony Seven Mars (Colony Mars Series Book 7)
by Gerald M. Kilby
- Price$4.99
- Rating4.7
- Reviews685
-
Entanglement: Fast Paced Sci-Fi Thriller (The Belt Series Book 1)
by Gerald M. Kilby
- Price$0.99
- Rating4.2
- Reviews4,135
Main categories
FAQ
How many books does Gerald M. Kilby have on Amazon?
KDPTop tracks 20 of their books; 12 made an Amazon list in the last 30 days.
Which categories does Gerald M. Kilby publish in?
Their books chart most often in Fantasy, Horror & Science Fiction, Genetic Engineering, Hard Science Fiction.
How does Gerald M. Kilby price their books?
The median price is $4.99; half of the books cost $2.99–$4.99.
Has Gerald M. Kilby 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.