KDP categories · Top KDP authors
Knowledge Hub: Amazon KDP author data
As of Nov 6, 2026, Knowledge Hub has 25 books on Amazon, 13 of them on a best-seller list in the last 30 days (best rank #15), mostly in Math, Elementary School, Popular & Elementary.
| Median price | $4.99 |
|---|---|
| Price range (middle 50%) | $4.99 – $4.99 |
| Median reviews | 1 |
| Total reviews | 2 |
| New books (30 days) | 13 |
| Breakout books (30 days) | 3 |
What stands out
- 52% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $4.99, 17% below the median of their main category, Math.
- 13 new books in the last 30 days, 3 of them broke into a Best Sellers list.
Knowledge Hub's best-ranked books
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Geometry Explorers: A Fun and Illustrated Math Adventure That Teaches Shapes, Angles, Perimeter, Area, Volume, Coordinates, and Spatial Thinking Through ... Adventure from Counting to Calculus Book 9)
by Knowledge Hub
- Price$4.99
- Reviews-
- Published2026-08
-
Algebra Adventures: A Fun and Illustrated Math Adventure That Teaches Variables, Expressions, Equations, Patterns, Graphs, and Algebraic Thinking ... Adventure from Counting to Calculus Book 8)
by Knowledge Hub
- Price$4.99
- Rating5.0
- Reviews1
- Published2026-08
-
Physics Adventure Quest: Exploring Motion, Energy, Gravity, Light, and the Secrets of the Universe, Story-based and Cartoon Illustrations (CURIOUS KIDS ... Biology, & Geography for Curious Minds)
by Knowledge Hub
- Price$6.99
- Reviews-
-
Division Detectives: A Fun and Illustrated Math Adventure That Teaches Equal Sharing, Division Facts, Remainders, and Problem-Solving Through Exciting ... Adventure from Counting to Calculus Book 4)
by Knowledge Hub
- Price$0
- Rating3.0
- Reviews1
- Published2026-08
-
Fraction Kingdom: A Fun and Illustrated Math Adventure That Teaches Fractions, Equivalent Fractions, Mixed Numbers, and Everyday Fraction Skills Through ... Adventure from Counting to Calculus Book 5)
by Knowledge Hub
- Price$4.99
- Reviews-
- Published2026-08
-
The Secret of Addition & Substraction: A Fun and Illustrated Math Adventure That Teaches Addition, Subtraction, and Problem-Solving Through Exciting ... Adventure from Counting to Calculus Book 2)
by Knowledge Hub
- Price$0
- Reviews-
- Published2026-08
-
Probability & Chance: A Fun and Illustrated Math Adventure That Teaches Probability, Statistics, Graphs, Mean, Median, Mode, Decision-Making Through ... Exciting Adventure from Counting to Calculus)
by Knowledge Hub
- Price$14.99
- Reviews-
-
Multiplication Magic: A Fun and Illustrated Math Adventure That Teaches Multiplication, Times Tables, Arrays, Multiples, Factors, and Problem-Solving ... Adventure from Counting to Calculus Book 3)
by Knowledge Hub
- Price$4.99
- Reviews-
- Published2026-08
-
Why Do We See Light?: Discover How Light Helps Us See the Amazing World Around Us! (Curious Kids Science Adventure Book 1)
by Knowledge Hub
- Price$0
- Reviews-
- Published2026-05
-
The Amazing World of Numbers: A Fun and cartoonized Math Adventure That Teaches Counting, Number Sense, Place Value, Patterns, Comparing Numbers, and ... Adventure from Counting to Calculus Book 1)
by Knowledge Hub
- Price$0
- Reviews-
- Published2026-08
Main categories
FAQ
How many books does Knowledge Hub have on Amazon?
KDPTop tracks 25 of their books; 13 made an Amazon list in the last 30 days.
Which categories does Knowledge Hub publish in?
Their books chart most often in Math, Elementary School, Popular & Elementary.
How does Knowledge Hub price their books?
The median price is $4.99; half of the books cost $4.99–$4.99.
Has Knowledge Hub released new books recently?
13 new books in the last 30 days, 3 of which reached a Best Sellers list.
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.