KDP categories · Top KDP authors
Test Preparation (Books): Amazon KDP category data
Amazon Books Best Sellers data for Test Preparation (Books), updated Nov 2, 2026: median price $9.99, median 1,320 reviews, average rating 4.7 and a KDPTop opportunity score of 23/100 (highly competitive).
| Price range (middle 50%) | $6.50 – $22.92 |
|---|---|
| Average rating | 4.7 |
| New releases (90 days) | 3% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Only 3% of its best sellers are under 90 days old, fewer than in 88% of Books categories: established titles hold the list.
- Its review barrier is higher than in 88% of Books categories: the median best seller has 1,320 reviews, so new books need time to build up.
- At $9.99 its median price is below 91% of Books categories, so it is a volume game.
Top 10 Test Preparation best sellers
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The Official ACT Prep Guide 2026-2027: Book + Online
by ACT
- List rank#3
- Price$34.46
- Rating4.6
- Reviews174
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Teach Your Child to Read in 100 Easy Lessons: Revised and Updated Second Edition
by Siegfried Engelmann
- List rank#4
- Price$16.52
- Rating4.6
- Reviews17,388
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Preschool Big Fun Workbook: Preschool Learning Workbook with Over 250 Practice Games and Puzzles for PreK Math, Writing, Shapes and More Activities
- List rank#5
- Price$6.99
- Rating4.8
- Reviews8,388
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Print Handwriting Practice for Kids 8-12: 250 Awesome Fun Facts about Science, Animals, and History (Foundations of Handwriting)
by Little Bigfoot
- List rank#6
- Price$7.99
- Rating4.8
- Reviews538
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ABC Tracing Workbook: A-Z Alphabet Letter Tracing Activities for Capital and Small Letters | Alphabet Handwriting Practice Workbook | Learn to Write and Trace Book for Kindergarten and Kids Ages 3-5
by Lucas & Friends by RV AppStudios
- List rank#7
- Price$3.99
- Rating4.8
- Reviews1,671
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2026/2027 ASVAB For Dummies: Book + 7 Practice Tests, Flashcards, and Videos Online
- List rank#8
- Price$24.19
- Rating4.7
- Reviews309
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Humble Math - 100 Days of Timed Tests: Multiplication: Grades 3-5, Math Drills, Digits 0-12, Reproducible Practice Problems
by Humble Math
- List rank#9
- Price$7.50
- Rating4.8
- Reviews12,319
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Eragon: Inheritance, Book 1
- List rank#10
- Price$19.59
- Rating4.7
- Reviews17,866
Subcategories
Same niche in Kindle eBooks: Test Preparation
FAQ
Is Test Preparation a good niche for Amazon KDP?
Its KDPTop opportunity score is 23/100, which makes it highly competitive. The median best seller has 1,320 reviews and sells for $9.99.
How many reviews do you need to rank in Test Preparation?
The median best seller has 1,320 reviews, and 7% of them have fewer than 100.
What do Test Preparation best sellers cost?
The median price is $9.99; half of the best sellers are priced between $6.50 and $22.92.
Can new books break into Test Preparation?
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.