KDP categories · Top KDP authors
Sonja Swift: Amazon KDP author data
As of Nov 6, 2026, Sonja Swift has 3 books on Amazon, 3 of them on a best-seller list in the last 30 days (best rank #17), mostly in Marine Life, Environmentalism, Ecosystems.
| Median price | $25.49 |
|---|---|
| Price range (middle 50%) | $18.74 – $26.52 |
| Median reviews | 5 |
| Total reviews | 5 |
| New listings (30 days, incl. new editions) | 2 |
| Breakout books (30 days) | 2 |
What stands out
- Median price $25.49, 77% above the median of their main category, Marine Life.
Sonja Swift's best-ranked books
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Red Sky in the Morning: Of Water, Whales, and Warnings
by Sonja Swift
- Price$25.49
- Reviews-
- Published2026-10
-
Red Sky in the Morning: Of Water, Whales, and Warnings
by Sonja Swift
- Price$11.99
- Reviews-
-
Echo Loba, Loba Echo: Of Wisdom, Wolves and Women
by Sonja Swift
- Price$27.54
- Rating4.7
- Reviews5
Main categories
FAQ
How many books does Sonja Swift have on Amazon?
KDPTop tracks 3 of their books; 3 made an Amazon list in the last 30 days.
Which categories does Sonja Swift publish in?
Their books chart most often in Marine Life, Environmentalism, Ecosystems.
How does Sonja Swift price their books?
The median price is $25.49; half of the books cost $18.74–$26.52.
Has Sonja Swift released new books recently?
2 new books in the last 30 days, 2 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.