KDP categories · Top KDP authors
Critical Care (Internal Medicine, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Critical Care (Internal Medicine, Kindle eBooks), updated Nov 2, 2026: median price $19.99, median 10 reviews, average rating 4.6 and a KDPTop opportunity score of 30/100 (highly competitive).
| Price range (middle 50%) | $9.99 – $89.99 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 17% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 1% of the parent category Internal Medicine (776), one of the easier corners under it.
- At $19.99 its median price beats 99% of Kindle eBooks categories, leaving more margin per copy.
- Its review barrier is lower than in 81% of Kindle eBooks categories: the median best seller has only 10 reviews, so new books can chart with few.
Top 10 Critical Care best sellers
-
Death Is But a Dream: Finding Hope and Meaning in End of Life Dreams
by Christopher Kerr
- List rank#1
- Price$16.99
- Rating4.6
- Reviews874
-
Bad Medicine: How COVID Protocols Turned Hospitals into Death Traps
by Mikki Willis
- List rank#2
- Price$16.99
- Rating5.0
- Reviews2
-
On Call: Emergency Room Stories: Volume 1
- List rank#3
- Price$3.99
- Rating3.8
- Reviews68
-
The Ultimate Guide to Methylene Blue: Remarkable Hope for Depression, COVID, AIDS & other Viruses, Alzheimer’s, Autism, Cancer, Heart Disease, Cognitive ... Targeting Mitochondrial Dysfunction)
by Mark Sloan
- List rank#4
- Price$2.99
- Rating4.7
- Reviews3,787
-
The Vasopressor & Inotrope Handbook: A Practical Guide for Healthcare Professionals
by Eddy Gutierrez
- List rank#5
- Price$9.99
- Rating4.8
- Reviews250
-
Advanced Cardiovascular Life Support (ACLS) Provider Manual - A Comprehensive Guide Covering the Latest Guidelines: 2nd Edition - Updated for 2025 (ACLS and BLS Study Guides Book 1)
- List rank#6
- Price$12.99
- Rating4.5
- Reviews908
-
The Advanced Ventilator Book
by William Owens
- List rank#7
- Price$9.99
- Rating4.7
- Reviews492
-
Critical Care: A New Nurse Faces Death, Life, and Everything in Between
by Theresa Brown
- List rank#8
- Price$9.03
- Rating4.4
- Reviews1,001
-
Stories of Intensive Care: Medical Challenges and Ethical Dilemmas in Real Patients
by Lawrence Martin
- List rank#9
- Price$3.99
- Rating4.5
- Reviews29
-
The Ultimate AGACNP Study Guide & Board Review Companion: Adult Gerontology Acute Care Nurse Practitioner Board Review Book
by CYNTHIA MUHONJA
- List rank#10
- Price$12.99
- Reviews-
FAQ
Is Critical Care a good niche for Amazon KDP?
Its KDPTop opportunity score is 30/100, which makes it highly competitive. The median best seller has 10 reviews and sells for $19.99.
How many reviews do you need to rank in Critical Care?
The median best seller has 10 reviews, and 74% of them have fewer than 100.
What do Critical Care best sellers cost?
The median price is $19.99; half of the best sellers are priced between $9.99 and $89.99.
Can new books break into Critical Care?
17% 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.