KDP categories · Top KDP authors
Grammar (Reading & Writing, Books): Amazon KDP category data
Amazon Books Best Sellers data for Grammar (Reading & Writing, Books), updated Nov 2, 2026: median price $8.99, median 399 reviews, average rating 4.7 and a KDPTop opportunity score of 24/100 (highly competitive).
| Price range (middle 50%) | $6.51 – $12.99 |
|---|---|
| Average rating | 4.7 |
| New releases (90 days) | 3% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 15% of the parent category Reading & Writing (2,614), one of the easier corners under it.
- At $8.99 its median price is below 94% of Books categories, so it is a volume game.
- Only 3% of its best sellers are under 90 days old, fewer than in 88% of Books categories: established titles hold the list.
Top 10 Grammar best sellers
-
Goofy Mad Libs: World's Greatest Word Game
by Roger Price
- List rank#1
- Price$4.98
- Rating4.8
- Reviews6,111
-
Gross Me Out Mad Libs: World's Greatest Word Game
by Gabriella DeGennaro
- List rank#2
- Price$6.51
- Rating4.8
- Reviews1,347
-
I'm 8, It's Great Mad Libs: World's Greatest Word Game
by Kim Ostrow
- List rank#3
- Price$6.51
- Rating4.8
- Reviews163
-
More Best of Mad Libs: Over 140 Classic Mad Libs Stories!
by Roger Price
- List rank#4
- Price$6.28
- Rating4.8
- Reviews694
-
Home Run Mad Libs: World's Greatest Word Game About Baseball
by Mickie Matheis
- List rank#5
- Price$5.74
- Rating4.8
- Reviews157
-
Sleepover Party Mad Libs: World's Greatest Word Game
by Roger Price
- List rank#6
- Price$6.51
- Rating4.7
- Reviews3,105
-
Everything You Need to Ace English Language Arts in One Big Fat Notebook, 2nd Edition: The Complete Middle School Study Guide
- List rank#7
- Price$7.90
- Rating4.8
- Reviews11,633
-
Trick or Treat Mad Libs: World's Greatest Word Game
by Tristan Roarke
- List rank#8
- Price$5.99
- Rating4.8
- Reviews401
-
Mad Scientist Mad Libs: World's Greatest Word Game
by Mad Libs
- List rank#9
- Price$4.65
- Rating4.8
- Reviews1,424
-
GOALLLLLL! Mad Libs: World's Greatest Word Game About Soccer
by Dan Alleva
- List rank#10
- Price$6.51
- Rating4.7
- Reviews224
Same niche in Kindle eBooks: Grammar
FAQ
Is Grammar a good niche for Amazon KDP?
Its KDPTop opportunity score is 24/100, which makes it highly competitive. The median best seller has 399 reviews and sells for $8.99.
How many reviews do you need to rank in Grammar?
The median best seller has 399 reviews, and 23% of them have fewer than 100.
What do Grammar best sellers cost?
The median price is $8.99; half of the best sellers are priced between $6.51 and $12.99.
Can new books break into Grammar?
3% 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.