KDP categories · Top KDP authors
John Foster: Amazon KDP author data
As of Nov 6, 2026, John Foster has 14 books on Amazon, 10 of them on a best-seller list in the last 30 days (best rank #3), mostly in Fossils, Paleontology, Folklore & Mythology.
| Median price | $9.99 |
|---|---|
| Price range (middle 50%) | $4.99 – $13.99 |
| Median reviews | 147 |
| Total reviews | 1,296 |
| New listings (30 days, incl. new editions) | 3 |
| Breakout books (30 days) | 0 |
What stands out
- 71% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $9.99, 49% below the median of their main category, Fossils.
- 3 new listings in the last 30 days (new editions included).
John Foster's best-ranked books
-
Cambrian Ocean World: Ancient Sea Life of North America (Life of the Past)
by John Foster
- Price$9.99
- Rating4.6
- Reviews147
-
Dinosaur Rap (Barefoot Singalongs)
by John Foster
- Price$11.24
- Rating4.6
- Reviews322
-
Cambrian Ocean World: Ancient Sea Life of North America (Life of the Past Series)
by John Foster
- Price$20.79
- Rating4.6
- Reviews147
-
Lizzie's Axe: The True Story of Lizzie Borden and the Murders of 1892
by John Foster
- Price$4.99
- Rating3.9
- Reviews6
-
Beast Companions: The Unsung Animals of the Dinosaurs' World (Life of the Past)
by John Foster
- Price$17.99
- Rating4.0
- Reviews2
-
Cambrian Ocean World: Ancient Sea Life of North America (Life of the Past)
by John Foster
- Price$46.93
- Rating4.6
- Reviews147
-
Lizzie's Axe: The True Story of Lizzie Borden and the Murders of 1892
by John Foster
- Price$4.99
- Rating3.9
- Reviews6
-
Dinosaur Rap (Barefoot Singalongs)
by John Foster
- Price$6.13
- Rating4.6
- Reviews322
- Published2016-11
-
Oxford Children's Rhyming Dictionary
by John Foster
- Price$11.33
- Rating4.8
- Reviews197
- Published2014-09
-
Lumi: The Last Light: A Post-Apocalyptic Novel
by John Foster
- Price$0
- Reviews-
Main categories
FAQ
How many books does John Foster have on Amazon?
KDPTop tracks 14 of their books; 10 made an Amazon list in the last 30 days.
Which categories does John Foster publish in?
Their books chart most often in Fossils, Paleontology, Folklore & Mythology.
How does John Foster price their books?
The median price is $9.99; half of the books cost $4.99–$13.99.
Has John Foster released new books recently?
3 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.