KDP categories · Top KDP authors
Reference (Puzzles & Games, Books): Amazon KDP category data
Amazon Books Best Sellers data for Reference (Puzzles & Games, Books), updated Nov 3, 2026: median price $15.93, median 400 reviews, average rating 4.6 and a KDPTop opportunity score of 31/100 (highly competitive).
| Price range (middle 50%) | $12.97 – $22.08 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 17% |
| Books on the list | 100 |
| Store | Books |
What stands out
- 17% of its best sellers came out in the last 90 days, more than in 86% of Books categories: readers here keep buying new titles.
- Its review barrier is higher than in 74% of Books categories: the median best seller has 400 reviews, so new books need time to build up.
Top 10 Reference best sellers
-
How to Win at Chess: The Ultimate Guide for Beginners and Beyond
by Levy Rozman
- List rank#1
- Price$15.75
- Rating4.8
- Reviews3,958
-
A Beginner's Guide to American Mah Jongg: How to Play the Game & Win
by Elaine Sandberg
- List rank#2
- Price$9.91
- Rating4.7
- Reviews4,549
-
How to Win at Chess, Next Level: The Ultimate Guide for Intermediate Play
by Levy Rozman
- List rank#3
- Price$27.47
- Rating5.0
- Reviews83
-
The Official Clue Book of Puzzles: Test Your Detective Skills with over 80 Perplexing Puzzles
- List rank#4
- Price$14.99
- Rating4.2
- Reviews6
-
Mastering American Mahjong: A Complete Guide to Rules and Strategy
- List rank#5
- Price$17.49
- Rating4.7
- Reviews33
-
The Official SCRABBLE Players Dictionary, 8th Ed. - Newest Edition, Mass Market Paperback
- List rank#6
- Price$9.50
- Rating4.3
- Reviews46
-
The Game Master's Book of Traps, Puzzles and Dungeons: A punishing collection of bone-crunching contraptions, brain-teasing riddles and ... RPG adventures (The Game Master Series)
- List rank#7
- Price$16
- Rating4.8
- Reviews4,304
-
American Mah Jongg for Beginners: Learn & Master the Game with Ease - New Full Color Edition Featuring This Year’s Card Strategies
by Linda Moore
- List rank#8
- Price$17.91
- Rating4.5
- Reviews1,151
-
The Legend of Zelda: Breath of the Wild The Complete Official Guide: -Expanded Edition
by Piggyback
- List rank#9
- Price$28.25
- Rating4.8
- Reviews12,367
-
The Official SCRABBLE Players Dictionary, 7th Ed.
- List rank#10
- Price$7.79
- Rating4.7
- Reviews4,452
Same niche in Kindle eBooks: Reference
FAQ
Is Reference a good niche for Amazon KDP?
Its KDPTop opportunity score is 31/100, which makes it highly competitive. The median best seller has 400 reviews and sells for $15.93.
How many reviews do you need to rank in Reference?
The median best seller has 400 reviews, and 34% of them have fewer than 100.
What do Reference best sellers cost?
The median price is $15.93; half of the best sellers are priced between $12.97 and $22.08.
Can new books break into Reference?
17% 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.