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Robert Thorson: Amazon KDP author data
As of Nov 6, 2026, Robert Thorson has 7 books on Amazon, 7 of them on a best-seller list in the last 30 days (best rank #4), mostly in Masonry, Geology, Rocks & Minerals.
| Median price | $17.99 |
|---|---|
| Price range (middle 50%) | $15.73 – $26.49 |
| Median reviews | 14 |
| Total reviews | 399 |
| New books (30 days) | 2 |
| Breakout books (30 days) | 2 |
What stands out
- 100% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $17.99, 18% below the median of their main category, Masonry.
Robert Thorson's best-ranked books
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Stone by Stone: The Magnificent History in New England's Stone Walls
by Robert Thorson
- Price$16.09
- Rating4.7
- Reviews179
-
Stone by Stone: The Magnificent History in New England's Stone Walls
by Robert Thorson
- Price$14.49
- Rating4.7
- Reviews179
-
The Boatman: Henry David Thoreau’s River Years
by Robert Thorson
- Price$30
- Rating4.7
- Reviews13
-
The Walden Experiments: The Science of Henry David Thoreau
by Robert Thorson
- Price$22.98
- Reviews-
- Published2026-09
-
The Guide to Walden Pond: An Exploration of the History, Nature, Landscape, and Literature of One of America's Most Iconic Places
by Robert Thorson
- Price$17.99
- Rating4.8
- Reviews14
-
The Guide To Walden Pond: An Exploration of the History, Nature, Landscape, and Literature of One of America's Most Iconic Places
by Robert Thorson
- Price$31.82
- Rating4.8
- Reviews14
- Published2018-03
-
The Walden Experiments: The Science of Henry David Thoreau
by Robert Thorson
- Price$15.37
- Reviews-
- Published2026-09
Main categories
FAQ
How many books does Robert Thorson have on Amazon?
KDPTop tracks 7 of their books; 7 made an Amazon list in the last 30 days.
Which categories does Robert Thorson publish in?
Their books chart most often in Masonry, Geology, Rocks & Minerals.
How does Robert Thorson price their books?
The median price is $17.99; half of the books cost $15.73–$26.49.
Has Robert Thorson 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.