KDP categories · Top KDP authors
Hard-Boiled (Mystery, Books): Amazon KDP category data
Amazon Books Best Sellers data for Hard-Boiled (Mystery, Books), updated Nov 2, 2026: median price $5.99, median 3,543 reviews, average rating 4.5 and a KDPTop opportunity score of 27/100 (highly competitive).
| Price range (middle 50%) | $4.99 – $10.74 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 21% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its review barrier is higher than in 96% of Books categories: the median best seller has 3,543 reviews, so new books need time to build up.
- At $5.99 its median price is below 98% of Books categories, so it is a volume game.
- 21% of its best sellers came out in the last 90 days, more than in 91% of Books categories: readers here keep buying new titles.
Top 10 Hard-Boiled best sellers
-
Find Me Nowhere
- List rank#1
- Price$18.69
- Rating5.0
- Reviews36
-
Old Haunts: Albert Smith's Mystery Thrillers Book 8
by Steve Higgs
- List rank#2
- Price$6.99
- Rating4.9
- Reviews27
-
Sleeping Beauties
by Sam Holland
- List rank#3
- Price$18.30
- Rating5.0
- Reviews1
-
SIGHT LINE: A NEAGLEY THRILLER (Jack Reacher's Special Investigators: NEAGLEY Book 1)
by Dan Ames
- List rank#4
- Price$7.99
- Rating4.3
- Reviews1,370
-
The Taken Ones: A J.P. Beaumont Novel – A J.P. Beaumont Mystery of Disappearing Women and the Investigation That Leads Somewhere Darker (J. P. Beaumont Novel Book 27)
by J. A. Jance
- List rank#5
- Price$14.99
- Reviews-
-
The Safe Room: A Short Story
by Lisa Unger
- List rank#6
- Price$1.99
- Rating4.1
- Reviews10,479
-
Chain Reaction: The unmissable new Reacher for 2026, a high-octane adventure from the global bestselling thriller authors (Jack Reacher, 31)
by Lee Child
- List rank#7
- Price-
- Rating4.8
- Reviews5,286
-
The Black Ice (A Harry Bosch Novel Book 2)
- List rank#8
- Price$9.99
- Rating4.5
- Reviews41,171
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Same niche in Kindle eBooks: Hard-Boiled
FAQ
Is Hard-Boiled a good niche for Amazon KDP?
Its KDPTop opportunity score is 27/100, which makes it highly competitive. The median best seller has 3,543 reviews and sells for $5.99.
How many reviews do you need to rank in Hard-Boiled?
The median best seller has 3,543 reviews, and 11% of them have fewer than 100.
What do Hard-Boiled best sellers cost?
The median price is $5.99; half of the best sellers are priced between $4.99 and $10.74.
Can new books break into Hard-Boiled?
21% of the current best sellers were released in the last 90 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.