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Radiology (Internal Medicine, Books): Amazon KDP category data
Amazon Books Best Sellers data for Radiology (Internal Medicine, Books), updated Nov 2, 2026: median price $71.84, median 47 reviews, average rating 4.7 and a KDPTop opportunity score of 35/100 (highly competitive).
| Price range (middle 50%) | $41.57 – $114 |
|---|---|
| Average rating | 4.7 |
| New releases (90 days) | 4% |
| 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 $71.84 its median price beats 98% of Books categories, leaving more margin per copy.
- Only 4% of its best sellers are under 90 days old, fewer than in 82% of Books categories: established titles hold the list.
Top 10 Radiology best sellers
-
Examination Review for Ultrasound: Abdomen and Obstetrics & Gynecology
by STEVEN M. PENNY MA RT(R)) RDMS
- List rank#1
- Price$94.48
- Rating4.6
- Reviews236
-
Mosby's Comprehensive Review of Radiography: The Complete Study Guide and Career Planner
by William J. Callaway MA RT(R)
- List rank#2
- Price$85.99
- Rating4.8
- Reviews321
-
Critical Care and Hospitalist Medicine Made Ridiculously Simple
by Michael Donahoe M.D.
- List rank#3
- Price$59.95
- Rating4.7
- Reviews748
-
Fenbendazole & Ivermectin Protocols: A Patient and Caregiver Guide to Fenbendazole, Ivermectin, and Making Informed Decisions With Your Care Team
by Lauren Segal
- List rank#4
- Price$8.29
- Reviews-
-
Nuclear Cardiology Review: Print + eBook with Multimedia: A Self-Assessment Tool
by WAEL A. JABER
- List rank#5
- Price$86.98
- Rating4.8
- Reviews7
-
Lange Q & A Radiography Examination, Thirteenth Edition
by D.A. Saia
- List rank#6
- Price$50.39
- Rating4.8
- Reviews19
-
Learning Radiology: Recognizing the Basics
by William Herring MD FACR
- List rank#7
- Price$52.31
- Rating4.6
- Reviews73
-
Core Radiology: A Visual Approach to Diagnostic Imaging
by Ellen X. Sun
- List rank#8
- Price$166
- Rating4.1
- Reviews184
-
Vascular Technology: An Illustrated Review
by RN Rumwell, Claudia
- List rank#9
- Price$99.95
- Rating4.8
- Reviews333
-
Radiologic Physics - War Machine
by Prometheus Lionhart M.D.
- List rank#10
- Price$41.44
- Rating4.7
- Reviews207
Subcategories
FAQ
Is Radiology a good niche for Amazon KDP?
Its KDPTop opportunity score is 35/100, which makes it highly competitive. The median best seller has 47 reviews and sells for $71.84.
How many reviews do you need to rank in Radiology?
The median best seller has 47 reviews, and 71% of them have fewer than 100.
What do Radiology best sellers cost?
The median price is $71.84; half of the best sellers are priced between $41.57 and $114.
Can new books break into Radiology?
4% 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.