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Martial Arts (Children's Books › Sports & Outdoors, Books): Amazon KDP category data
Amazon Books Best Sellers data for Martial Arts (Children's Books › Sports & Outdoors, Books), updated Nov 3, 2026: median price $10.99, median 123 reviews, average rating 4.7 and a KDPTop opportunity score of 26/100 (highly competitive).
| Price range (middle 50%) | $6.81 – $14.99 |
|---|---|
| Average rating | 4.7 |
| New releases (90 days) | 10% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 15% of the parent category Sports & Outdoors (831), one of the easier corners under it.
- The same niche in Kindle eBooks scores 16, 10 points lower than here.
- At $10.99 its median price is below 87% of Books categories, so it is a volume game.
Top 10 Martial Arts best sellers
-
Totally Turtles! (Teenage Mutant Ninja Turtles) (Little Golden Book)
by Matthew J. Gilbert
- List rank#1
- Price$5.58
- Rating4.8
- Reviews3,089
-
Phonics Power! (Teenage Mutant Ninja Turtles): 12 Step into Reading Books (Step into Reading Boxed Set)
by Jennifer Liberts
- List rank#2
- Price$12.99
- Rating4.6
- Reviews3,616
-
I Am Michelangelo (Teenage Mutant Ninja Turtles) (Little Golden Book)
by Mei Nakamura
- List rank#3
- Price$5.99
- Rating4.8
- Reviews90
-
Diary of a 6th Grade Ninja (a hilarious adventure for children ages 9-12)
- List rank#4
- Price$6.99
- Rating4.6
- Reviews10,166
-
I Am Leonardo (Teenage Mutant Ninja Turtles) (Little Golden Book)
by Mei Nakamura
- List rank#5
- Price$5.99
- Rating4.8
- Reviews123
-
Way of the Warrior Kid III: Where There's a Will . . .
- List rank#6
- Price$10.49
- Rating4.9
- Reviews5,615
-
Ninja Life Hacks Emotions and Feelings 8 Book Box Set (Books 1-8: Angry, Inventor, Positive, Lazy, Helpful, Earth, Grumpy, Kind)
by Mary Nhin
- List rank#7
- Price$59.72
- Rating4.7
- Reviews2,193
-
I Am Raphael (Teenage Mutant Ninja Turtles) (Little Golden Book)
by Mei Nakamura
- List rank#8
- Price$5.58
- Rating4.8
- Reviews65
-
Cat Ninja (Volume 1)
by Matthew Cody
- List rank#9
- Price$7.65
- Rating4.8
- Reviews753
-
I Am Donatello (Teenage Mutant Ninja Turtles) (Little Golden Book)
by Mei Nakamura
- List rank#10
- Price$5.99
- Rating5.0
- Reviews40
Same niche in Kindle eBooks: Martial Arts
FAQ
Is Martial Arts a good niche for Amazon KDP?
Its KDPTop opportunity score is 26/100, which makes it highly competitive. The median best seller has 123 reviews and sells for $10.99.
How many reviews do you need to rank in Martial Arts?
The median best seller has 123 reviews, and 46% of them have fewer than 100.
What do Martial Arts best sellers cost?
The median price is $10.99; half of the best sellers are priced between $6.81 and $14.99.
Can new books break into Martial Arts?
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.