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Robert Masse: Amazon KDP author data
As of Nov 6, 2026, Robert Masse has 10 books on Amazon, 10 of them on a best-seller list in the last 30 days (best rank #11), mostly in Light, Optics, Gravity.
10Books on Amazon
10Listed in 30 days
5.0Average rating
| Median price | $4.50 |
|---|---|
| Price range (middle 50%) | $4.50 – $4.50 |
| Median reviews | 2 |
| Total reviews | 3 |
| New books (30 days) | 5 |
| Breakout books (30 days) | 0 |
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 $4.50, 36% below the median of their main category, Light.
- 5 new books in the last 30 days.
Robert Masse's best-ranked books
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Vectors and Tensors of Physical Fields
by Robert Masse
- Price$4.50
- Rating5.0
- Reviews2
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Main categories
FAQ
How many books does Robert Masse have on Amazon?
KDPTop tracks 10 of their books; 10 made an Amazon list in the last 30 days.
Which categories does Robert Masse publish in?
Their books chart most often in Light, Optics, Gravity.
How does Robert Masse price their books?
The median price is $4.50; half of the books cost $4.50–$4.50.
Has Robert Masse released new books recently?
5 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.