KDP categories · Top KDP authors
Robert Tonner: Amazon KDP author data
As of Nov 6, 2026, Robert Tonner has 2 books on Amazon, 2 of them on a best-seller list in the last 30 days (best rank #18), mostly in Science, Nature & How It Works, Science Fiction, Technology.
| Median price | $10.99 |
|---|---|
| Price range (middle 50%) | $8.99 – $12.99 |
| Median reviews | 7 |
| Total reviews | 14 |
| New books (30 days) | 2 |
| Breakout books (30 days) | 2 |
What stands out
- Median price $10.99, 58% above the median of their main category, Science, Nature & How It Works.
Robert Tonner's best-ranked books
-
Practically Human (Bio-Core Chronicles)
by Robert Tonner
- Price$14.99
- Rating5.0
- Reviews7
-
Practically Human (Bio-Core Chronicles Book 1)
by Robert Tonner
- Price$6.99
- Rating5.0
- Reviews7
Main categories
FAQ
How many books does Robert Tonner have on Amazon?
KDPTop tracks 2 of their books; 2 made an Amazon list in the last 30 days.
Which categories does Robert Tonner publish in?
Their books chart most often in Science, Nature & How It Works, Science Fiction, Technology.
How does Robert Tonner price their books?
The median price is $10.99; half of the books cost $8.99–$12.99.
Has Robert Tonner 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.