KDP categories · Top KDP authors
Hard-Boiled (Mystery, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Hard-Boiled (Mystery, Kindle eBooks), updated Nov 3, 2026: median price $5.99, median 3,803 reviews, average rating 4.5 and a KDPTop opportunity score of 22/100 (highly competitive).
| Price range (middle 50%) | $3.99 – $6.99 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 22% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its review barrier is higher than in 96% of Kindle eBooks categories: the median best seller has 3,803 reviews, so new books need time to build up.
- 22% of its best sellers came out in the last 90 days, more than in 89% of Kindle eBooks categories: readers here keep buying new titles.
Top 10 Hard-Boiled best sellers
-
Old Haunts: Albert Smith's Mystery Thrillers Book 8
by Steve Higgs
- List rank#1
- Price$6.99
- Rating4.9
- Reviews27
-
SIGHT LINE: A NEAGLEY THRILLER (Jack Reacher's Special Investigators: NEAGLEY Book 1)
by Dan Ames
- List rank#2
- Price$7.99
- Rating4.3
- Reviews1,370
-
The Safe Room: A Short Story
by Lisa Unger
- List rank#3
- Price$1.99
- Rating4.1
- Reviews10,479
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The Black Ice (A Harry Bosch Novel Book 2)
- List rank#6
- Price$9.99
- Rating4.5
- Reviews41,171
-
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
-
Double Trouble: A Texas Private Investigator Mystery (Book 3) (Iris Raines Mystery)
by Denise Diana Huddle
- List rank#8
- Price$0.99
- Rating4.6
- Reviews55
-
Stalking the Angel: An Elvis Cole and Joe Pike Novel
by Robert Crais
- List rank#9
- Price$6.99
- Rating4.3
- Reviews9,332
-
Dead Reckoning (Detective Mike Roth Book 2)
by Blake Banner
- List rank#10
- Price$3.99
- Rating4.5
- Reviews190
Same niche in Books: Hard-Boiled
FAQ
Is Hard-Boiled a good niche for Amazon KDP?
Its KDPTop opportunity score is 22/100, which makes it highly competitive. The median best seller has 3,803 reviews and sells for $5.99.
How many reviews do you need to rank in Hard-Boiled?
The median best seller has 3,803 reviews, and 10% 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 $3.99 and $6.99.
Can new books break into Hard-Boiled?
22% 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.