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Brian O'Sullivan: Amazon KDP author data
As of Nov 6, 2026, Brian O'Sullivan has 26 books on Amazon, 5 of them on a best-seller list in the last 30 days (best rank #8), mostly in Noir, Radiology, Oncology.
| Median price | $10.19 |
|---|---|
| Price range (middle 50%) | $5.99 – $15.56 |
| Median reviews | 1,085 |
| Total reviews | 51,364 |
| New books (30 days) | 3 |
| Breakout books (30 days) | 1 |
What stands out
- Median price $10.19, 104% above the median of their main category, Noir.
- 3 new books in the last 30 days, 1 of them broke into a Best Sellers list.
Brian O'Sullivan's best-ranked books
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SH*T SHOW
by Brian O'Sullivan
- Price$5.99
- Rating4.4
- Reviews1,757
- Published2026-08
-
CLUSTERF*CK
by Brian O'Sullivan
- Price$5.99
- Rating4.1
- Reviews11,554
-
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The Bartender
by Brian O'Sullivan
- Price$0
- Rating4.2
- Reviews5,772
- Published2019-06
-
The Photo Album (Bobby McGowan Thrillers Book 1)
by Brian O'Sullivan
- Price$0
- Rating4.2
- Reviews5,214
- Published2023-12
-
Revenge at Sea (Quint Thrillers Book 1)
by Brian O'Sullivan
- Price$0
- Rating4.4
- Reviews2,889
- Published2020-03
-
THE OTHER ANNIE (Bobby McGowan Thrillers Book 2)
by Brian O'Sullivan
- Price$0
- Rating4.5
- Reviews2,794
- Published2024-06
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THE VIDEO TAPE (Bobby McGowan Thrillers Book 3)
by Brian O'Sullivan
- Price$0
- Rating4.4
- Reviews1,553
- Published2025-07
Main categories
FAQ
How many books does Brian O'Sullivan have on Amazon?
KDPTop tracks 26 of their books; 5 made an Amazon list in the last 30 days.
Which categories does Brian O'Sullivan publish in?
Their books chart most often in Noir, Radiology, Oncology.
How does Brian O'Sullivan price their books?
The median price is $10.19; half of the books cost $5.99–$15.56.
Has Brian O'Sullivan released new books recently?
3 new books 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.