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Rheumatology (Internal Medicine, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Rheumatology (Internal Medicine, Kindle eBooks), updated Nov 2, 2026: median price $9.99, median 20 reviews, average rating 4.5 and a KDPTop opportunity score of 21/100 (highly competitive).
| Price range (middle 50%) | $6.99 – $15.04 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 10% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 3% of the parent category Internal Medicine (776), one of the easier corners under it.
- Its review barrier is lower than in 72% of Kindle eBooks categories: the median best seller has only 20 reviews, so new books can chart with few.
Top 10 Rheumatology best sellers
-
Mayo Clinic Guide to Fibromyalgia: Strategies to Take Back Your Life
by Andy Abril M.D.
- List rank#1
- Price$11.99
- Rating4.6
- Reviews835
-
Osteoporosis: The book I wish I'd had when I was diagnosed
by Lisa Pocius MD
- List rank#2
- Price$9.99
- Rating4.8
- Reviews11
-
Too Flexible to Feel Good: A Practical Roadmap to Managing Hypermobility
by Celest Pereira
- List rank#3
- Price$12.99
- Rating4.7
- Reviews199
-
Living Well with Autoimmune Diseases: A Rheumatologist's Guide to Taking Charge of Your Health (A Johns Hopkins Press Health Book)
by Julius Birnbaum
- List rank#4
- Price$18.27
- Rating4.7
- Reviews58
-
Ehlers-Danlos Syndrome: The Hypermobile Body (The Invisible Illness Series)
by Pointed-Pen Press
- List rank#5
- Price$9.99
- Rating4.7
- Reviews34
-
Rebuild Your Bones: The 12-Week Osteoporosis Protocol
by Mira Calton CN
- List rank#6
- Price$15.99
- Rating4.2
- Reviews524
-
Living with Rheumatoid Arthritis (A Johns Hopkins Press Health Book)
by Tammi L. Shlotzhauer
- List rank#7
- Price$20.04
- Rating4.6
- Reviews50
-
Borrelia The Hidden Imitator
by Alfred Miller
- List rank#8
- Price$9.99
- Rating5.0
- Reviews6
-
A Guide to Living with Ehlers-Danlos Syndrome (Hypermobility Type): Bending without Breaking (2nd edition)
by Isobel Knight
- List rank#9
- Price$14.72
- Rating4.4
- Reviews214
-
The Complete Osteoporosis Guide: Step by Step to Stronger Bones, Safer Movement and Lower Fall Risk
by Michael R. Thompson
- List rank#10
- Price$12.99
- Rating4.6
- Reviews18
FAQ
Is Rheumatology a good niche for Amazon KDP?
Its KDPTop opportunity score is 21/100, which makes it highly competitive. The median best seller has 20 reviews and sells for $9.99.
How many reviews do you need to rank in Rheumatology?
The median best seller has 20 reviews, and 73% of them have fewer than 100.
What do Rheumatology best sellers cost?
The median price is $9.99; half of the best sellers are priced between $6.99 and $15.04.
Can new books break into Rheumatology?
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.