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Thomas O’Callaghan: Amazon KDP author data
As of Nov 6, 2026, Thomas O’Callaghan has 4 books on Amazon, 4 of them on a best-seller list in the last 30 days (best rank #6), mostly in Self Help, Roman Catholicism, Catholicism.
| Median price | $10.49 |
|---|---|
| Price range (middle 50%) | $6.99 – $14.24 |
| Median reviews | 10 |
| Total reviews | 40 |
| New books (30 days) | 4 |
| Breakout books (30 days) | 2 |
What stands out
- 4 new books in the last 30 days, 2 of them broke into a Best Sellers list.
Thomas O’Callaghan's best-ranked books
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CATHOLIC BIBLE COMPANION 73 PAGES: Understand All 73 Books of the Catholic Bible with Clear Overviews, Themes, Symbols, Salvation History, the Mass, and Catholic Faith
by Thomas O’Callaghan
- Price$14.99
- Rating4.8
- Reviews14
- Published2026-09
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CATHOLIC BIBLE COMPANION 73 PAGES: Understand All 73 Books of the Catholic Bible with Clear Overviews, Themes, Symbols, Salvation History, the Mass, and Catholic Faith
by Thomas O’Callaghan
- Price$6.99
- Rating4.8
- Reviews14
- Published2026-09
-
Catholic Bible Study Companion: A Book-by-Book Guide to All 73 Books of Scripture with Key Passages, Biblical Themes, Salvation History, and Catholic Teaching
by Thomas O’Callaghan
- Price$6.99
- Rating5.0
- Reviews6
-
Catholic Bible Study Companion: A Book-by-Book Guide to All 73 Books of Scripture with Key Passages, Biblical Themes, Salvation History, and Catholic Teaching
by Thomas O’Callaghan
- Price$13.99
- Rating5.0
- Reviews6
Main categories
FAQ
How many books does Thomas O’Callaghan have on Amazon?
KDPTop tracks 4 of their books; 4 made an Amazon list in the last 30 days.
Which categories does Thomas O’Callaghan publish in?
Their books chart most often in Self Help, Roman Catholicism, Catholicism.
How does Thomas O’Callaghan price their books?
The median price is $10.49; half of the books cost $6.99–$14.24.
Has Thomas O’Callaghan released new books recently?
4 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.