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Cardiology (Internal Medicine, Books): Amazon KDP category data
Amazon Books Best Sellers data for Cardiology (Internal Medicine, Books), updated Nov 2, 2026: median price $24.95, median 92 reviews, average rating 4.6 and a KDPTop opportunity score of 34/100 (highly competitive).
| Price range (middle 50%) | $15.84 – $60.25 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 10% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 4% of the parent category Internal Medicine (2,081), one of the easier corners under it.
- At $24.95 its median price beats 83% of Books categories, leaving more margin per copy.
- Prices spread wide: the middle half runs from $15.84 to $60.25, so budget editions and premium or boxed sets sell side by side.
Top 10 Cardiology best sellers
-
Livingood Daily: Your 21-Day Guide to Experience Real Health
by Dr. Livingood
- List rank#1
- Price$11.62
- Rating4.4
- Reviews8,053
-
EKG | ECG Interpretation Made Easy: An Illustrated Study Guide For Students To Easily Learn How To Read & Interpret ECG Strips
by NEDU
- List rank#2
- Price$10.95
- Rating4.5
- Reviews3,661
-
Rapid Interpretation of EKG's, Sixth Edition
by Dale Dubin
- List rank#3
- Price$59.89
- Rating4.8
- Reviews4,969
-
The Great Cholesterol Myth, Revised and Expanded: Why Lowering Your Cholesterol Won't Prevent Heart Disease--and the Statin-Free Plan that Will - National Bestseller
by Jonny Bowden
- List rank#4
- Price$16
- Rating4.7
- Reviews2,125
-
EKGs / ECGs: a QuickStudy Laminated Reference Guide
by Lisa Farach
- List rank#5
- Price$9.27
- Rating4.6
- Reviews4,927
-
Raising the Dead: A Doctor Encounters the Miraculous
by Dr. Chauncey Crandall
- List rank#6
- Price$16.01
- Rating4.6
- Reviews717
-
Blood Pressure Log Book: Simple Daily Blood Pressure Log | Record & Monitor Blood Pressure at Home | 110 Pages (6" x 9" Inches)
by Eden Paul
- List rank#7
- Price$8.99
- Rating4.7
- Reviews1,499
-
Understanding AFib: Think Clearly About AFib. Make Confident Treatment Decisions
by Scott Lee MD
- List rank#8
- Price$9.99
- Rating4.6
- Reviews49
-
The Simple Heart Cure: The 90-Day Program to Stop and Reverse Heart Disease REVISED & UPDATED 2ND EDITION
by Chauncey Crandall
- List rank#9
- Price$11.61
- Rating4.5
- Reviews1,130
-
The Clot Thickens: The enduring mystery of heart disease
by Dr Malcolm Kendrick
- List rank#10
- Price$16.95
- Rating4.8
- Reviews1,644
FAQ
Is Cardiology a good niche for Amazon KDP?
Its KDPTop opportunity score is 34/100, which makes it highly competitive. The median best seller has 92 reviews and sells for $24.95.
How many reviews do you need to rank in Cardiology?
The median best seller has 92 reviews, and 51% of them have fewer than 100.
What do Cardiology best sellers cost?
The median price is $24.95; half of the best sellers are priced between $15.84 and $60.25.
Can new books break into Cardiology?
10% 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.