KDP categories · Top KDP authors
Testing (Test Preparation, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Testing (Test Preparation, Kindle eBooks), updated Nov 1, 2026: median price $10.99, median 22 reviews, average rating 4.6 and a KDPTop opportunity score of 32/100 (highly competitive).
| Price range (middle 50%) | $4.99 – $19.99 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 20% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 31% of the parent category Test Preparation (70), one of the easier corners under it.
- 20% of its best sellers came out in the last 90 days, more than in 86% of Kindle eBooks categories: readers here keep buying new titles.
- At $10.99 its median price beats 90% of Kindle eBooks categories, leaving more margin per copy.
Top 10 Testing best sellers
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![ASVAB Study Guide & Test Prep [2 in 1]: The Ultimate All-in-One Study System to Master Eve book cover by Optimal Prep Publishing](https://images-na.ssl-images-amazon.com/images/I/71kvGabuz+L._UX300__PJkp-sticker-v1,TopRight,0,-50_AC_UL300_SR300,200_.jpg)
ASVAB Study Guide & Test Prep [2 in 1]: The Ultimate All-in-One Study System to Master Every ASVAB Section and Ace the AFQT with Exam-Ready Practice Tests and Step-by-Step Explanations
- List rank#1
- Price$29.99
- Rating4.6
- Reviews569
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2026/2027 ASVAB For Dummies: Book + 7 Practice Tests, Flashcards, and Videos Online
- List rank#2
- Price$20
- Rating4.7
- Reviews309
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GED STUDY GUIDE 2026-2027 ALL SUBJECTS: Complete study guide for Math, Language Arts, Science & Social Studies with Practice Questions, Detailed Answer Explanations and Full-Length Practice Tests
by Deborah A. Langford
- List rank#3
- Price$0.99
- Rating5.0
- Reviews8
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ISEE® Upper Level Prep: An Endless Wealth of Proven Strategies, Unlimited Tests, and Step-by-Step Practice to Overcome Anxiety, Strengthen Skills, and Secure Admission to Your Dream School
by Testwork Academy Press
- List rank#4
- Price$0.99
- Rating4.9
- Reviews20
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How To Write A 5-Paragraph Essay: A No-Nonsense Step-By-Step Guide To Mastering Effective Essay Writing, Practical Study Skills, Easy Exercises & Simple Lessons for the Successful Student
by Successful Student Publications
- List rank#5
- Price$7.99
- Rating4.7
- Reviews481
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CWS® Wound Certification Prep - Quiz Book : Certified Wound Specialist® (CWS®) Examination (The CWS® Home Study Prep System)
by ABWM Foundation
- List rank#6
- Price$33.48
- Rating4.6
- Reviews47
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LMSW Exam Prep 2026-2027: 30 Full-Length Practice Tests and ASWB Masters Study Guide Book: [Updated for the New Outline]
- List rank#7
- Price$29.99
- Rating4.9
- Reviews11
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English C1 Vocabulary 2022, The Most Comprehensive Advanced English Vocabulary: Words You Should Know for Brilliant Writing, Speaking, Essay (The Most Comprehensive English Dictionaries)
by Premier English Learning Publishing
- List rank#8
- Price$2.99
- Rating4.2
- Reviews97
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HSPT Strategies and Practice, Third Edition: Prep Book with 4 Practice Tests + Comprehensive Review + Practice + Strategies (Barron's Test Prep)
- List rank#9
- Price$14.99
- Rating4.5
- Reviews2
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Schaum's Outline of College Physics, Twelfth Edition (Schaum's Outlines)
by Eugene Hecht
- List rank#10
- Price$11.90
- Rating4.6
- Reviews272
FAQ
Is Testing a good niche for Amazon KDP?
Its KDPTop opportunity score is 32/100, which makes it highly competitive. The median best seller has 22 reviews and sells for $10.99.
How many reviews do you need to rank in Testing?
The median best seller has 22 reviews, and 79% of them have fewer than 100.
What do Testing best sellers cost?
The median price is $10.99; half of the best sellers are priced between $4.99 and $19.99.
Can new books break into Testing?
20% 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.