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Helen Castor: Amazon KDP author data
As of Nov 6, 2026, Helen Castor has 9 books on Amazon, 8 of them on a best-seller list in the last 30 days (best rank #8), mostly in Royalty, Great Britain, England.
| Median price | $13.49 |
|---|---|
| Price range (middle 50%) | $12.50 – $19.36 |
| Median reviews | 379 |
| Total reviews | 5,518 |
| New books (30 days) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- 89% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
Helen Castor's best-ranked books
-
She-Wolves: The Women Who Ruled England Before Elizabeth
by Helen Castor
- Price$31.49
- Rating4.4
- Reviews1,167
- Published2025-08
-
She-Wolves: The Women Who Ruled England Before Elizabeth
by Helen Castor
- Price$12.50
- Rating4.4
- Reviews1,167
-
The Eagle and the Hart: The Tragedy of Richard II and Henry IV
by Helen Castor
- Price$16.99
- Rating4.7
- Reviews379
-
Elizabeth I (Penguin Monarchs): A Study in Insecurity
by Helen Castor
- Price$5.99
- Rating4.5
- Reviews273
-
Joan of Arc: A History
by Helen Castor
- Price$12.82
- Rating4.1
- Reviews860
-
Joan of Arc: A Study of Faith, Politics, and Sanctity in Fifteenth-Century France
by Helen Castor
- Price$13.49
- Rating4.1
- Reviews860
-
The Eagle and the Hart: The Tragedy of Richard II and Henry IV
by Helen Castor
- Price$25.95
- Rating4.7
- Reviews379
- Published2024-10
-
The Eagle and the Hart: The Tragedy of Richard II and Henry IV
by Helen Castor
- Price$19.36
- Rating4.7
- Reviews376
-
Blood and Roses: One Family's Struggle and Triumph During the Tumultuous Wars of the Roses
by Helen Castor
- Price$11.89
- Rating4.6
- Reviews57
- Published2007-04
Main categories
FAQ
How many books does Helen Castor have on Amazon?
KDPTop tracks 9 of their books; 8 made an Amazon list in the last 30 days.
Which categories does Helen Castor publish in?
Their books chart most often in Royalty, Great Britain, England.
How does Helen Castor price their books?
The median price is $13.49; half of the books cost $12.50–$19.36.
Has Helen Castor 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.