KDP categories · Top KDP authors
Combinatorics (Pure Mathematics, Books): Amazon KDP category data
Amazon Books Best Sellers data for Combinatorics (Pure Mathematics, Books), updated Nov 3, 2026: median price $14.95, median 16 reviews, average rating 4.5 and a KDPTop opportunity score of 28/100 (highly competitive).
| Price range (middle 50%) | $9.99 – $48.08 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 16% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 2% of the parent category Pure Mathematics (743), one of the easier corners under it.
- 16% of its best sellers came out in the last 90 days, more than in 83% of Books categories: readers here keep buying new titles.
- Its review barrier is lower than in 76% of Books categories: the median best seller has only 16 reviews, so new books can chart with few.
Top 10 Combinatorics best sellers
-
1000+ Sudoku Puzzles for Adults: A Book With More Than 1000 Sudoku Puzzles from Easy to Hard for adults.
- List rank#1
- Price$6.99
- Rating4.5
- Reviews5,884
-
Sudoku Puzzle Book for Adults: Easy, Medium & Hard Levels – Verified by Hand Sudoku Book with Full Solutions for Adults (Ultimate Sudoku Challenge)
by Mind & Logic Books
- List rank#2
- Price$9.99
- Rating4.4
- Reviews139
-
Hard to Expert Sudoku Puzzles for Adults: Logic Puzzles with Verified Difficulty • No Guessing Required • Full Solutions Included • Online Step-by-Step Hints (Sudoku Challenge Series)
by Alex Liam
- List rank#3
- Price$9.99
- Rating4.1
- Reviews7
-
1800 Sudoku Puzzles for Adults: Easy to Expert Sudoku Book with 400 Bonus Puzzles, QR Solutions & Scratch Pages – Progressive Challenge for Adults, Teens & Seniors (Sudoku Challenge Series)
by Alex Liam
- List rank#4
- Price$11.99
- Rating4.3
- Reviews35
-
The Magic of Math: Solving for x and Figuring Out Why
- List rank#5
- Price$1.99
- Rating4.5
- Reviews397
-
1000+ Sudoku Puzzles Easy to Medium: Compact Edition • Instant QR Solution Access (Sudoku Challenge Series)
by Alex Liam
- List rank#6
- Price$9.99
- Rating4.8
- Reviews8
-
Easy Sudoku for Seniors: Large Print Brain Games to Boost Mental Memory and Keep an Active Mind - Perfect Puzzle Book for Beginners with Solutions
by Arthur Gridley
- List rank#7
- Price$9.99
- Rating4.7
- Reviews248
-
1000+ Sudoku Puzzles Hard to Expert: Compact Edition • Instant QR Solution Access (Sudoku Challenge Series)
by Alex Liam
- List rank#8
- Price$9.99
- Rating3.2
- Reviews5
-
Easy to Medium Sudoku Puzzles for Adults: Logic Puzzles with Verified Difficulty • No Guessing Required • Full Solutions Included • Online Step-by-Step Hints (Sudoku Challenge Series)
by Alex Liam
- List rank#9
- Price$9.99
- Rating4.8
- Reviews5
-
Crime Scene Sudoku: Abandoned Asylum (Murder Mystery Logic Puzzles)
by Lucan Crowe
- List rank#10
- Price$12.99
- Rating4.4
- Reviews29
Same niche in Kindle eBooks: Combinatorics
FAQ
Is Combinatorics a good niche for Amazon KDP?
Its KDPTop opportunity score is 28/100, which makes it highly competitive. The median best seller has 16 reviews and sells for $14.95.
How many reviews do you need to rank in Combinatorics?
The median best seller has 16 reviews, and 86% of them have fewer than 100.
What do Combinatorics best sellers cost?
The median price is $14.95; half of the best sellers are priced between $9.99 and $48.08.
Can new books break into Combinatorics?
16% 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.