KDP categories · Top KDP authors
Reference (Words, Language & Grammar, Books): Amazon KDP category data
Amazon Books Best Sellers data for Reference (Words, Language & Grammar, Books), updated Nov 3, 2026: median price $12.58, median 878 reviews, average rating 4.6 and a KDPTop opportunity score of 21/100 (highly competitive).
| Price range (middle 50%) | $9.99 – $16.62 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 2% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Only 2% of its best sellers are under 90 days old, fewer than in 93% of Books categories: established titles hold the list.
- Its median reviews are 41% of the parent category Words, Language & Grammar (2,139), one of the easier corners under it.
- Its review barrier is higher than in 83% of Books categories: the median best seller has 878 reviews, so new books need time to build up.
Top 10 Reference best sellers
-
On Writing: A Memoir of the Craft (A Memoir of the Craft (Reissue))
by Stephen King
- List rank#1
- Price$9.23
- Rating4.7
- Reviews20,553
-
The Well-Spoken Thesaurus: The Most Powerful Ways to Say Everyday Words and Phrases (Christmas Gift or Stocking Stuffer for Writers or College Students)
by Tom Heehler
- List rank#2
- Price$8.96
- Rating4.6
- Reviews3,082
-
Bird by Bird: Some Instructions on Writing and Life
by Anne Lamott
- List rank#3
- Price$9.99
- Rating4.6
- Reviews9,459
-
Publication Manual (OFFICIAL) 7th Edition of the American Psychological Association
by American Psychological Association
- List rank#4
- Price$34.22
- Rating4.8
- Reviews34,523
-
Madrigal's Magic Key to Spanish: A Creative and Proven Approach
by Margarita Madrigal
- List rank#5
- Price$13.33
- Rating4.6
- Reviews5,403
-
The Elements of Style, Fourth Edition
- List rank#6
- Price$10.32
- Rating4.7
- Reviews7,312
-
On Writing Well: The Essential Guide to Mastering Nonfiction Writing and Effective Communication
- List rank#7
- Price$9.18
- Rating4.6
- Reviews5,884
-
-
Good Writing: 36 Ways to Improve Your Sentences
by Neal Allen
- List rank#9
- Price$16.12
- Rating4.6
- Reviews283
-
The Emotion Thesaurus: A Writer's Guide to Character Expression (Second Edition) (Writers Helping Writers Series)
- List rank#10
- Price$19.95
- Rating4.8
- Reviews4,540
Same niche in Kindle eBooks: Reference
FAQ
Is Reference a good niche for Amazon KDP?
Its KDPTop opportunity score is 21/100, which makes it highly competitive. The median best seller has 878 reviews and sells for $12.58.
How many reviews do you need to rank in Reference?
The median best seller has 878 reviews, and 7% of them have fewer than 100.
What do Reference best sellers cost?
The median price is $12.58; half of the best sellers are priced between $9.99 and $16.62.
Can new books break into Reference?
2% 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.