KDP categories · Top KDP authors
Stephen Fratini: Amazon KDP author data
As of Nov 6, 2026, Stephen Fratini has 5 books on Amazon, 5 of them on a best-seller list in the last 30 days (best rank #16), mostly in Reference, Vector Analysis, Infinity.
| Median price | $7.99 |
|---|---|
| Price range (middle 50%) | $5.99 – $7.99 |
| Median reviews | 1 |
| Total reviews | 4 |
| New listings (30 days, incl. new editions) | 1 |
| Breakout books (30 days) | 1 |
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 $7.99, 20% below the median of their main category, Reference.
Stephen Fratini's best-ranked books
-
Probability and Statistics: A Concise Guide
by Stephen Fratini
- Price$7.99
- Reviews-
-
Mathematical Thinking (2nd Edition): Exercises for the Mind
by Stephen Fratini
- Price$2.99
- Rating5.0
- Reviews1
-
Beyond Limits: Infinitesimals, Abstract Algebra, Category Theory, Synthetic Differential Geometry, and Automatic Differentiation
by Stephen Fratini
- Price$7.99
- Rating5.0
- Reviews1
-
The Shape of Space: A Guided Tour of Vectors, Matrices, Tensors and Markov Chains
by Stephen Fratini
- Price$5.99
- Rating5.0
- Reviews1
-
Mathematical Vignettes III (2nd edition): Introductions to non-Euclidean geometry, topology and complex analysis
by Stephen Fratini
- Price$7.99
- Rating5.0
- Reviews1
Main categories
FAQ
How many books does Stephen Fratini have on Amazon?
KDPTop tracks 5 of their books; 5 made an Amazon list in the last 30 days.
Which categories does Stephen Fratini publish in?
Their books chart most often in Reference, Vector Analysis, Infinity.
How does Stephen Fratini price their books?
The median price is $7.99; half of the books cost $5.99–$7.99.
Has Stephen Fratini released new books recently?
1 new book in the last 30 days, 1 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.