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Critical Care (Internal Medicine, Books): Amazon KDP category data
Amazon Books Best Sellers data for Critical Care (Internal Medicine, Books), updated Nov 2, 2026: median price $54.96, median 46 reviews, average rating 4.5 and a KDPTop opportunity score of 34/100 (highly competitive).
| Price range (middle 50%) | $25.24 – $81.72 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 8% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 2% of the parent category Internal Medicine (2,081), one of the easier corners under it.
- At $54.96 its median price beats 97% of Books categories, leaving more margin per copy.
- Prices spread wide: the middle half runs from $25.24 to $81.72, so budget editions and premium or boxed sets sell side by side.
Top 10 Critical Care best sellers
-
Death is But a Dream: Finding Hope and Meaning at Life's End
by Christopher Kerr
- List rank#1
- Price$14.95
- Rating4.6
- Reviews874
-
Adult CCRN Exam Premium: Study Guide for the Latest Exam Blueprint, Includes 3 Practice Tests, Comprehensive Review, and Online Study Prep (Barron's Test Prep)
- List rank#2
- Price$39.36
- Rating4.8
- Reviews894
-
Bad Medicine: How COVID Protocols Turned Hospitals into Death Traps
by Mikki Willis
- List rank#3
- Price$30.75
- Rating5.0
- Reviews2
-
The Ventilator Book
by William Owens MD
- List rank#4
- Price$26.01
- Rating4.8
- Reviews2,268
-
Marino's The ICU Book: Print + eBook with Updates
by Paul Marino
- List rank#5
- Price$112
- Rating4.1
- Reviews105
-
The Vasopressor & Inotrope Handbook: A Practical Guide for Healthcare Professionals
by Eddy J. Gutierrez MD
- List rank#6
- Price$29.31
- Rating4.8
- Reviews250
-
In Shock: My Journey from Death to Recovery and the Redemptive Power of Hope
by Dr. Rana Awdish
- List rank#7
- Price$19.65
- Rating4.6
- Reviews2,510
-
Ace the CCRN: You Can Do It! Practice Review Questions
by Nicole Kupchik
- List rank#8
- Price$33.95
- Rating4.7
- Reviews333
-
Adult CCRN Exam Flashcards, Third Edition: Up-to-Date Review and Practice + Sorting Ring for Custom Study (Barron's Test Prep)
- List rank#9
- Price$37.01
- Rating4.7
- Reviews174
-
Acid-Base, Fluids, and Electrolytes Made Ridiculously Simple: Color Edition
by Richard A. Preston M.D.
- List rank#10
- Price$27.95
- Rating4.7
- Reviews456
FAQ
Is Critical Care a good niche for Amazon KDP?
Its KDPTop opportunity score is 34/100, which makes it highly competitive. The median best seller has 46 reviews and sells for $54.96.
How many reviews do you need to rank in Critical Care?
The median best seller has 46 reviews, and 60% of them have fewer than 100.
What do Critical Care best sellers cost?
The median price is $54.96; half of the best sellers are priced between $25.24 and $81.72.
Can new books break into Critical Care?
8% 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.