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Andre Castagna: Amazon KDP author data
As of Nov 6, 2026, Andre Castagna has 7 books on Amazon, 6 of them on a best-seller list in the last 30 days (best rank #1), mostly in Regents, Mathematics, Geometry & Topology.
| Median price | $14.85 |
|---|---|
| Price range (middle 50%) | $9.85 – $22.60 |
| Median reviews | 127 |
| Total reviews | 829 |
| New books (30 days) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- 86% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $14.85, 26% below the median of their main category, Regents.
Andre Castagna's best-ranked books
-
Let's Review Regents: Geometry, Sixth Edition (Barron's New York Regents)
by Andre Castagna
- Price$10.71
- Rating4.5
- Reviews74
- Published2025-01
-
Regents Exams and Answers: Geometry, Sixth Edition (Barron's New York Regents)
by Andre Castagna
- Price$5.99
- Rating4.6
- Reviews130
-
Let's Review Regents: Geometry, Sixth Edition (Barron's New York Regents)
by Andre Castagna
- Price$8.99
- Rating4.5
- Reviews74
-
Regents Exams and Answers: Geometry, Sixth Edition (Barron's New York Regents)
by Andre Castagna
- Price$17.70
- Rating4.6
- Reviews130
- Published2025-01
-
Regents Exams and Answers: Geometry (Barron's Regents NY)
by Andre Castagna
- Price$14.85
- Rating4.5
- Reviews220
- Published2016-11
-
Let's Review Geometry (Barron's Regents NY)
by Andre Castagna
- Price$27.50
- Rating4.6
- Reviews127
-
Let's Review Regents: Geometry Revised Edition (Barron's New York Regents)
by Andre Castagna
- Price$29.60
- Rating4.5
- Reviews74
- Published2021-01
Main categories
FAQ
How many books does Andre Castagna have on Amazon?
KDPTop tracks 7 of their books; 6 made an Amazon list in the last 30 days.
Which categories does Andre Castagna publish in?
Their books chart most often in Regents, Mathematics, Geometry & Topology.
How does Andre Castagna price their books?
The median price is $14.85; half of the books cost $9.85–$22.60.
Has Andre Castagna released new books recently?
0 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.