KDP categories · Top KDP authors
Study Aids (Reference, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Study Aids (Reference, Kindle eBooks), updated Nov 2, 2026: median price $6.99, median 12 reviews, average rating 4.3 and a KDPTop opportunity score of 28/100 (highly competitive).
| Price range (middle 50%) | $3.55 – $9.99 |
|---|---|
| Average rating | 4.3 |
| New releases (90 days) | 17% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 3% of the parent category Reference (466), one of the easier corners under it.
- 17% of its best sellers came out in the last 90 days, more than in 81% of Kindle eBooks categories: readers here keep buying new titles.
- Its review barrier is lower than in 79% of Kindle eBooks categories: the median best seller has only 12 reviews, so new books can chart with few.
Top 10 Study Aids best sellers
-
Everything You Need to Ace Geometry in One Big Fat Notebook (Big Fat Notebooks)
- List rank#1
- Price$11.99
- Rating4.8
- Reviews5,803
-
Everything You Need to Ace World History in One Big Fat Notebook, 2nd Edition: The Complete Middle School Study Guide
- List rank#2
- Price$11.99
- Rating4.8
- Reviews8,857
-
Pilot's Handbook of Aeronautical Knowledge: FAA-H-8083-25C
by Federal Aviation Administration Staff
- List rank#3
- Price$16.99
- Rating4.8
- Reviews700
-
Everything You Need to Ace English Language Arts in One Big Fat Notebook, 2nd Edition: The Complete Middle School Study Guide
- List rank#4
- Price$6.99
- Rating4.8
- Reviews11,633
-
The Focus Dragon: An Engaging Storybook to Help Children Deal with Distractions, Improve Attention, Focus, ADHD and Concentration – For Classrooms, Schools, ... Readers or (Little Dragons, Big Skills)
- List rank#5
- Price$3.90
- Rating4.6
- Reviews14
-
Learning How to Learn: How to Succeed in School Without Spending All Your Time Studying; A Guide for Kids and Teens
by Barbara Oakley PhD
- List rank#6
- Price$10.99
- Rating4.7
- Reviews1,606
-
Everything You Need to Ace Math in One Big Fat Notebook: The Complete Middle School Study Guide
- List rank#7
- Price$5.99
- Reviews-
-
Super-Charged Science: Packed With Awesome Facts!
by Lisa Regan
- List rank#8
- Price$3.99
- Rating5.0
- Reviews1
-
Everything You Need to Ace U.S. History in One Big Fat Notebook, 2nd Edition: The Complete Middle School Study Guide
- List rank#9
- Price$11.99
- Rating5.0
- Reviews2
-
Everything You Need to Ace Computer Science and Coding in One Big Fat Notebook: The Complete Middle School Study Guide (Big Fat Notebooks)
- List rank#10
- Price$11.99
- Rating4.8
- Reviews5,571
Same niche in Books: Study Aids
FAQ
Is Study Aids a good niche for Amazon KDP?
Its KDPTop opportunity score is 28/100, which makes it highly competitive. The median best seller has 12 reviews and sells for $6.99.
How many reviews do you need to rank in Study Aids?
The median best seller has 12 reviews, and 79% of them have fewer than 100.
What do Study Aids best sellers cost?
The median price is $6.99; half of the best sellers are priced between $3.55 and $9.99.
Can new books break into Study Aids?
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.