KDP categories · Top KDP authors
Cystic Fibrosis: Amazon KDP category data
Amazon Books Best Sellers data for Cystic Fibrosis, updated Nov 2, 2026: median price $13.99, median 5 reviews, average rating 4.5 and a KDPTop opportunity score of 21/100 (highly competitive).
| Price range (middle 50%) | $12.00 – $19.45 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 9% |
| Books on the list | 99 |
| Store | Books |
What stands out
- Its median reviews are 0% of the parent category Diseases & Physical Ailments (2,378), one of the easier corners under it.
- Its review barrier is lower than in 90% of Books categories: the median best seller has only 5 reviews, so new books can chart with few.
Top 10 Cystic Fibrosis best sellers
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Somatic Exercises For Nervous System Regulation: 35 Beginner – Intermediate Techniques To Reduce Anxiety & Tone Your Vagus Nerve In Under 10 Minutes A Day (Anxiety Relief)
by LearnWell Books
- List rank#1
- Price$5.99
- Rating4.5
- Reviews569
-
No Gallbladder Diet Cookbook: 2000 days of healthy , delicious & easy recipes for beginners | The Simple Food Guide for Health & Wellness Post Gallbladder Removal Surgery | 28 Day Meal Plan Included
by ISABELLA ABRAMS
- List rank#2
- Price$14.69
- Rating4.2
- Reviews226
-
No Gallbladder Diet Cookbook: Say Goodbye to Digestive Struggles with 150+ Mouth-Watering Recipes That Bring Joy Back to Eating After Gallbladder Removal – Meal Plan Included - 2025 Edition
by Lane Ingram
- List rank#3
- Price$13.49
- Rating4.0
- Reviews60
-
Simply Beans: Modern Mediterranean-Inspired Recipes for Longevity, Flavor, and Joy
by Nora J. Shepherd
- List rank#4
- Price$24.99
- Rating4.7
- Reviews61
-
Recipes for the Specific Carbohydrate Diet: The Grain-Free, Lactose-Free, Sugar-Free Solution to IBD, Celiac Disease, Autism, Cystic Fibrosis, and Other Health Conditions (Healthy Living Cookbooks)
by Raman Prasad
- List rank#5
- Price$12.66
- Rating4.4
- Reviews348
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No Gallbladder Diet Cookbook for Beginners: 1500 Days of Easy, Tasteful, Low-Fat Recipes for Health & Wellness Post-Surgery | Includes a 28-Day Meal Plan to Support Your Metabolism
by Rebecca Rios
- List rank#6
- Price$14.99
- Rating3.6
- Reviews85
-
Finding Joy with an Invisible Chronic Illness: Proven Strategies for Discovering Happiness, Meaning, and Fulfillment
by Christopher Martin
- List rank#7
- Price$12.95
- Rating4.8
- Reviews153
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The abilities in me: Cystic Fibrosis
by Gemma Keir
- List rank#8
- Price$12.67
- Rating4.7
- Reviews14
-
Alex: The Life of a Child
by Frank Deford
- List rank#9
- Price$7.99
- Rating4.7
- Reviews437
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No Gallbladder Diet Cookbook: Recovery and Balance Your Metabolism After Gallbladder Removal with Healthy Low Fat Recipes,After Removal Gallbladder Food Guide,42 Day Meal Plan
by BARBARA GLISSON
- List rank#10
- Price$13.99
- Rating4.5
- Reviews55
FAQ
Is Cystic Fibrosis a good niche for Amazon KDP?
Its KDPTop opportunity score is 21/100, which makes it highly competitive. The median best seller has 5 reviews and sells for $13.99.
How many reviews do you need to rank in Cystic Fibrosis?
The median best seller has 5 reviews, and 95% of them have fewer than 100.
What do Cystic Fibrosis best sellers cost?
The median price is $13.99; half of the best sellers are priced between $12.00 and $19.45.
Can new books break into Cystic Fibrosis?
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.