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Respiratory (Diseases & Physical Ailments, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Respiratory (Diseases & Physical Ailments, Kindle eBooks), updated Nov 2, 2026: median price $7.99, median 38 reviews, average rating 4.4 and a KDPTop opportunity score of 19/100 (highly competitive).
| Price range (middle 50%) | $3.99 – $9.99 |
|---|---|
| Average rating | 4.4 |
| New releases (90 days) | 9% |
| Books on the list | 99 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 5% of the parent category Diseases & Physical Ailments (714), one of the easier corners under it.
- The same niche in Books scores 30, 10 points higher than here; worth checking both.
- Prices spread wide: the middle half runs from $3.99 to $9.99, so budget editions and premium or boxed sets sell side by side.
Top 10 Respiratory best sellers
-
Everything Is Tuberculosis: The History and Persistence of Our Deadliest Infection
by John Green
- List rank#1
- Price-
- Rating4.4
- Reviews11,568
-
The Complete Survival Home Apothecary All-in-1: Master 600+ Herbal Remedies, Foraging Skills & Natural Recipes to Boost Health, Build Resilience & Protect Your Family in Any Emergency (Herbs Book 2)
- List rank#2
- Price$9.97
- Rating4.7
- Reviews1,031
-
CPAP Is Sexy: How Treating Sleep Apnea Restores Energy, Intimacy, and Life
by Yatin J Patel MD
- List rank#3
- Price$0.99
- Reviews-
-
COPD Solution: A Proven 10-Week Program for Living and Breathing Better with Chronic Lung Disease
by Dawn Lesley Fielding
- List rank#4
- Price$3.99
- Rating4.5
- Reviews248
-
Somatic Yoga For Nervous System Regulation: 41 Guided Techniques To Overcome Chronic Stress & Strengthen Your Mind-Body Connection In Just 10 Minutes A Day (Anxiety Relief)
by LearnWell Books
- List rank#5
- Price$5.99
- Rating4.5
- Reviews194
-
Break The Mold
by Dr. Jill Crista
- List rank#6
- Price$9.95
- Rating4.8
- Reviews669
-
Living with Idiopathic Pulmonary Fibrosis: A Practical Guide to Managing Symptoms, Treatment Plans, and Improving Lung Health
by Azalea Voss
- List rank#7
- Price$9.99
- Rating4.4
- Reviews7
-
THE SECRET TO THRIVING WITH COPD: A UNIQUE PERSONAL PERSPECTIVE FROM A MEDICAL PROFESSIONAL AND A LATE-STAGE PATIENT
by Dawn Lawson
- List rank#8
- Price$2.99
- Rating4.7
- Reviews131
-
The Mold Method: Why Some Homes Make People Sick and How to Fix Them
by Michael Rubino
- List rank#9
- Price$9.99
- Rating5.0
- Reviews16
-
The Ultimate COPD Diet Cookbook for Beginners: A Proven Guide for Handling and Living Well with Chronic Obstructive Pulmonary Disease
by FLOURISH WEXLER
- List rank#10
- Price$6.50
- Rating4.1
- Reviews7
Same niche in Books: Respiratory
FAQ
Is Respiratory a good niche for Amazon KDP?
Its KDPTop opportunity score is 19/100, which makes it highly competitive. The median best seller has 38 reviews and sells for $7.99.
How many reviews do you need to rank in Respiratory?
The median best seller has 38 reviews, and 71% of them have fewer than 100.
What do Respiratory best sellers cost?
The median price is $7.99; half of the best sellers are priced between $3.99 and $9.99.
Can new books break into Respiratory?
9% 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.