KDP categories · Top KDP authors
Colon & Rectal (Surgery, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Colon & Rectal (Surgery, Kindle eBooks), updated Nov 2, 2026: median price $9.99, median 4 reviews, average rating 4.4 and a KDPTop opportunity score of 20/100 (highly competitive).
| Price range (middle 50%) | $4.99 – $90.79 |
|---|---|
| Average rating | 4.4 |
| New releases (90 days) | 1% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 5% of the parent category Surgery (80), one of the easier corners under it.
- Only 1% of its best sellers are under 90 days old, fewer than in 97% of Kindle eBooks categories: established titles hold the list.
- Its review barrier is lower than in 90% of Kindle eBooks categories: the median best seller has only 4 reviews, so new books can chart with few.
Top 10 Colon & Rectal best sellers
-
The Simple Sickle Cell Anemia Guide
by Gracie Shawn
- List rank#1
- Price$3.99
- Rating5.0
- Reviews4
-
The Low Fiber Diet: 6-Week Plan for Restoring your Bowel Health
by Anna Keating
- List rank#2
- Price$2.99
- Rating3.8
- Reviews205
-
TOP KNIFE: The Art & Craft of Trauma Surgery
by Asher Hirshberg
- List rank#3
- Price$33.89
- Rating4.8
- Reviews365
-
Still Life with Colostomy (Book One) Not me
by David Ollier Weber
- List rank#4
- Price$9.99
- Rating4.5
- Reviews2
-
My First Colonoscopy: A Comical Look at the Prep, the Procedure, and the Relief Afterward
by Jordan Bundy
- List rank#5
- Price$2.99
- Rating4.8
- Reviews16
-
Encopresis—you can beat it!: Game-changing solutions for Toilet Anxiety, Soiling, and Constipation in Children (Toilet Training, Encopresis, Toilet Anxiety, ... and Constipation in Children Book 1)
by Dr. Baruch Kushnir
- List rank#6
- Price$9.99
- Rating4.5
- Reviews110
-
Bummer: What You Need to Know About Anal Health
by Marcus Burnstein
- List rank#7
- Price$9.99
- Rating4.6
- Reviews26
-
Trauma, Ninth Edition
by David V. Feliciano
- List rank#8
- Price$230
- Rating4.9
- Reviews68
-
Benign Anorectal Disorders: A Guide to Diagnosis and Management
by Nisar Ahmad Chowdri
- List rank#9
- Price$69.42
- Reviews-
-
Understanding Anal Fissure: From pain to healing
by S Sabri
- List rank#10
- Price$7.99
- Reviews-
FAQ
Is Colon & Rectal a good niche for Amazon KDP?
Its KDPTop opportunity score is 20/100, which makes it highly competitive. The median best seller has 4 reviews and sells for $9.99.
How many reviews do you need to rank in Colon & Rectal?
The median best seller has 4 reviews, and 94% of them have fewer than 100.
What do Colon & Rectal best sellers cost?
The median price is $9.99; half of the best sellers are priced between $4.99 and $90.79.
Can new books break into Colon & Rectal?
1% 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.