KDP categories · Top KDP authors
Gary Birken: Amazon KDP author data
As of Nov 6, 2026, Gary Birken has 12 books on Amazon, 10 of them on a best-seller list in the last 30 days (best rank #8), mostly in Medical, Thrillers, Domestic.
| Median price | $5.99 |
|---|---|
| Price range (middle 50%) | $3.74 – $5.99 |
| Median reviews | 2,931 |
| Total reviews | 35,323 |
| New listings (30 days, incl. new editions) | 1 |
| Breakout books (30 days) | 1 |
What stands out
- 83% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
Gary Birken's best-ranked books
-
Absence of Remorse: A Domestic Medical Thriller
by Gary Birken
- Price$5.99
- Rating4.6
- Reviews221
-
Error in Diagnosis: A Medical Thriller (Madison Shaw and Jack Wyatt Medical Mysteries Book 1)
by Gary Birken
- Price$5.99
- Rating4.5
- Reviews7,263
- Published2023-11
-
Code 15: A Medical Thriller
by Gary Birken
- Price$2.99
- Rating4.5
- Reviews4,045
- Published2022-07
-
Malice By Design: An Authentic Medical Thriller (Madison Shaw and Jack Wyatt Medical Mysteries Book 2)
by Gary Birken
- Price$5.99
- Rating4.4
- Reviews3,965
- Published2023-10
-
Sinister by Design: An Authentic Medical Thriller (Madison Shaw and Jack Wyatt Medical Mysteries Book 4)
by Gary Birken
- Price$5.99
- Rating4.5
- Reviews1,535
- Published2026-02
-
Final Diagnosis: A Medical Thriller
by Gary Birken
- Price$2.99
- Rating4.5
- Reviews2,606
- Published2022-08
-
Treachery by Design: An Authentic Medical Mystery (Madison Shaw and Jack Wyatt Medical Mysteries Book 3)
by Gary Birken
- Price$5.99
- Rating4.4
- Reviews3,277
- Published2024-12
-
Plague: A Medical Mystery
by Gary Birken
- Price$2.99
- Rating4.5
- Reviews2,448
- Published2022-07
-
Prognosis Critical: An Authentic Medical Thriller
by Gary Birken
- Price$5.99
- Rating4.5
- Reviews2,980
-
Embolus: A Medical Thriller
by Gary Birken
- Price$0
- Rating4.4
- Reviews2,882
- Published2022-08
Main categories
FAQ
How many books does Gary Birken have on Amazon?
KDPTop tracks 12 of their books; 10 made an Amazon list in the last 30 days.
Which categories does Gary Birken publish in?
Their books chart most often in Medical, Thrillers, Domestic.
How does Gary Birken price their books?
The median price is $5.99; half of the books cost $3.74–$5.99.
Has Gary Birken 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.