KDP categories · Top KDP authors
Cardiothoracic: Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Cardiothoracic, updated Nov 2, 2026: median price $63.89, median 4 reviews, average rating 4.6 and a KDPTop opportunity score of 26/100 (highly competitive).
| Price range (middle 50%) | $9.99 – $150 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 10% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 6% of the parent category Surgery (80), one of the easier corners under it.
- At $63.89 its median price beats 99% of Kindle eBooks categories, leaving more margin per copy.
- Its review barrier is lower than in 89% of Kindle eBooks categories: the median best seller has only 4 reviews, so new books can chart with few.
Top 10 Cardiothoracic best sellers
-
The Cardiac Surgery Playbook: A Practical Guide to Understanding, Preparing for, and Recovering After Heart Surgery
by Daniel T. Engelman
- List rank#1
- Price$9.99
- Rating5.0
- Reviews2
-
Nursing Dosage Calculation Workbook: 24 Categories Of Problems From Basic To Advanced! (Dosage Calculation Success Series Book 2)
- List rank#2
- Price$9.99
- Rating4.6
- Reviews1,411
-
Suture like a Surgeon: A Doctor’s Guide to Surgical Knots and Suturing Techniques used in the Departments of Surgery, Emergency Medicine, and Family Medicine
- List rank#3
- Price$9.99
- Rating4.6
- Reviews2,090
-
Atlas of Cardiac Surgical Techniques E-Book: A Volume in the Surgical Techniques Atlas Series
by Frank W. Sellke MD
- List rank#4
- Price$179
- Rating4.7
- Reviews11
-
Surgical Management of Aortic Pathology: Current Fundamentals for the Clinical Management of Aortic Disease (Medicine)
by Olaf H. Stanger
- List rank#5
- Price$190
- Rating5.0
- Reviews3
-
TOP KNIFE: The Art & Craft of Trauma Surgery
by Asher Hirshberg
- List rank#6
- Price$33.89
- Rating4.8
- Reviews365
-
Cardiac Patient: A Journey Through Stints for LAD, SIck Sinus Syndrome, Pacemaker, CABG, Afib, Heart Flutter,Ablation, CHF and Cardioversion
by Frank Shumard
- List rank#7
- Price$4.99
- Rating4.6
- Reviews5
-
Atlas of Pediatric Cardiac Surgery
by Rachid F. Idriss
- List rank#8
- Price$135
- Rating4.0
- Reviews10
-
The ECMO Book - E-Book
by Jeffrey DellaVolpe MD
- List rank#9
- Price$83.19
- Rating4.9
- Reviews22
-
Prevention Myths: Why Stress Tests Can’t Predict Your Heart Attack and Which Tests Actually Do
by Ford Brewer
- List rank#10
- Price$2.99
- Rating4.5
- Reviews105
FAQ
Is Cardiothoracic a good niche for Amazon KDP?
Its KDPTop opportunity score is 26/100, which makes it highly competitive. The median best seller has 4 reviews and sells for $63.89.
How many reviews do you need to rank in Cardiothoracic?
The median best seller has 4 reviews, and 96% of them have fewer than 100.
What do Cardiothoracic best sellers cost?
The median price is $63.89; half of the best sellers are priced between $9.99 and $150.
Can new books break into Cardiothoracic?
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.