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Bruce Robert Coffin: Amazon KDP author data
As of Nov 6, 2026, Bruce Robert Coffin has 20 books on Amazon, 6 of them on a best-seller list in the last 30 days (best rank #2), mostly in Series, Serial Killers, Murder.
| Median price | $5.99 |
|---|---|
| Price range (middle 50%) | $5.99 – $13.74 |
| Median reviews | 600 |
| Total reviews | 14,307 |
| New books (30 days) | 4 |
| Breakout books (30 days) | 1 |
What stands out
- Median price $5.99, 20% above the median of their main category, Series.
- 4 new books in the last 30 days, 1 of them broke into a Best Sellers list.
Bruce Robert Coffin's best-ranked books
-
Crimson Thaw (Detective Justice Book 1)
by Bruce Robert Coffin
- Price$4.99
- Rating4.4
- Reviews1,806
-
Bitter Fall (Detective Justice Book 2)
by Bruce Robert Coffin
- Price$5.99
- Rating4.5
- Reviews1,260
-
Dark Harbor (Detective Justice Book 3)
by Bruce Robert Coffin
- Price$5.99
- Rating4.5
- Reviews699
-
Among The Shadows: A Detective Byron Mystery (The John Byron Novels Book 1)
by Bruce Robert Coffin
- Price$0
- Rating4.4
- Reviews4,423
- Published2016-09
-
Beneath the Depths: A Detective Byron Mystery (The John Byron Novels Book 2)
by Bruce Robert Coffin
- Price$14.99
- Rating4.4
- Reviews2,231
-
Beyond the Truth: A Detective Byron Mystery (The John Byron Novels Book 3)
by Bruce Robert Coffin
- Price$14.99
- Rating4.6
- Reviews943
-
Within Plain Sight: A Detective Byron Mystery (The John Byron Novels Book 4)
by Bruce Robert Coffin
- Price$0
- Rating4.6
- Reviews917
- Published2020-02
-
Dark Harbor (Detective Justice)
by Bruce Robert Coffin
- Price$19.97
- Rating4.5
- Reviews639
-
The Cardinal's Curse (The Turner and Mosley Files Book 2)
by Bruce Robert Coffin
- Price$5.99
- Rating4.4
- Reviews560
-
The Pirate's Secret (The Turner and Mosley Files Book 3)
by Bruce Robert Coffin
- Price$5.99
- Rating4.4
- Reviews415
Main categories
FAQ
How many books does Bruce Robert Coffin have on Amazon?
KDPTop tracks 20 of their books; 6 made an Amazon list in the last 30 days.
Which categories does Bruce Robert Coffin publish in?
Their books chart most often in Series, Serial Killers, Murder.
How does Bruce Robert Coffin price their books?
The median price is $5.99; half of the books cost $5.99–$13.74.
Has Bruce Robert Coffin released new books recently?
4 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.