KDP categories · Top KDP authors
Brain Cancer: Amazon KDP category data
Amazon Books Best Sellers data for Brain Cancer, updated Nov 2, 2026: median price $14.99, median 42 reviews, average rating 4.6 and a KDPTop opportunity score of 21/100 (highly competitive).
| Price range (middle 50%) | $11.57 – $19.38 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 7% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 9% of the parent category Cancer (450), one of the easier corners under it.
Top 10 Brain Cancer best sellers
-
Cancer Is a Parasite: Kill it with the Safe, Over-the-Counter Antiparasitic Fenbendazole
by William F. Supple Jr.
- List rank#1
- Price$22.74
- Rating4.8
- Reviews192
-
The Wahls Protocol: A Radical New Way to Treat All Chronic Autoimmune Conditions Using Paleo Principles
by Terry Wahls M.D.
- List rank#2
- Price$11.58
- Rating4.6
- Reviews6,993
-
The Emperor of All Maladies: A Biography of Cancer
- List rank#3
- Price$16.99
- Rating4.7
- Reviews9,938
-
How Not to Die: Revised and Updated: Discover the Foods Scientifically Proven to Prevent and Reverse Disease
- List rank#4
- Price$19.09
- Rating4.7
- Reviews28,951
-
Dr. Blaylock's Prescriptions for Natural Health: 70 Remedies for Common Conditions
- List rank#5
- Price$14.46
- Rating4.6
- Reviews315
-
Cancer-Free: Your Guide to Gentle, Non-toxic Healing
by Bill Henderson
- List rank#6
- Price$31.43
- Rating4.7
- Reviews697
-
Radical Healing: A Stage 4 Cancer Survivor’s Holistic Blueprint for Recovery and Renewal
by Purna Pareek
- List rank#7
- Price$15.95
- Rating5.0
- Reviews12
-
The Oxygen Cure: A Complete Guide to Hyperbaric Oxygen Therapy
by William S. Maxfield
- List rank#8
- Price$11
- Rating4.6
- Reviews214
-
All My Chemotherapy Shit Chemotherapy Journal: Record Your Cancer Medical Treatment Cycle Charts For Side Effects & Appointments Diary Book Gift
by Chemo Notebook Publishing
- List rank#9
- Price$11.99
- Rating4.5
- Reviews152
-
Death Be Not Proud: An Acclaimed Father's Memoir of Love, Grief, and a Teenager's Unfaltering Courage (Perennial Classics)
by John J. Gunther
- List rank#10
- Price$10.59
- Rating4.6
- Reviews775
FAQ
Is Brain Cancer a good niche for Amazon KDP?
Its KDPTop opportunity score is 21/100, which makes it highly competitive. The median best seller has 42 reviews and sells for $14.99.
How many reviews do you need to rank in Brain Cancer?
The median best seller has 42 reviews, and 61% of them have fewer than 100.
What do Brain Cancer best sellers cost?
The median price is $14.99; half of the best sellers are priced between $11.57 and $19.38.
Can new books break into Brain Cancer?
7% 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.