KDP categories · Top KDP authors
Test Prep & Study Guides: Amazon KDP category data
Amazon Books Best Sellers data for Test Prep & Study Guides, updated Nov 3, 2026: median price $26.61, median 164 reviews, average rating 4.6 and a KDPTop opportunity score of 49/100 (fairly competitive).
| Price range (middle 50%) | $21.89 – $34.11 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 20% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 7% of the parent category New, Used & Rental Textbooks (2,358), one of the easier corners under it.
- 20% of its best sellers came out in the last 90 days, more than in 90% of Books categories: readers here keep buying new titles.
- At $26.61 its median price beats 86% of Books categories, leaving more margin per copy.
Top 10 Test Prep & Study Guides best sellers
-
The Official ACT Prep Guide 2026-2027: Book + Online
by ACT
- List rank#1
- Price$34.46
- Rating4.6
- Reviews174
-
2026/2027 ASVAB For Dummies: Book + 7 Practice Tests, Flashcards, and Videos Online
- List rank#2
- Price$24.19
- Rating4.7
- Reviews309
-
ATI TEAS Secrets Study Guide: TEAS 7 Prep Book, Six Full-Length Practice Tests (1,000+ Questions), Step-by-Step Video Tutorials: [Updated for the 7th Edition]
- List rank#3
- Price$26.49
- Rating4.7
- Reviews5,989
-
ARRL Ham Radio License Manual 6th Edition – Complete Study Guide with Question Pool to Pass the Technician Class Amateur Radio Exam
by ARRL Inc.
- List rank#4
- Price$32.95
- Rating4.4
- Reviews83
-
The Official SAT Study Guide, Second Edition
by The College Board
- List rank#5
- Price$21.59
- Rating4.7
- Reviews491
-
GED Test Prep Plus, Tenth Edition (2026): Includes a Diagnostic Pretest, 2 Full Length Practice Tests, 1000+ Practice Questions, and 60+ Online Videos (Kaplan Test Prep)
- List rank#6
- Price$23.34
- Rating4.7
- Reviews2,808
-
Princeton Review SAT Premium Prep, 2027: 6 Full-Length Practice Tests (3 in Book + 3 Adaptive Tests Online) + Online Flashcards + Review & Tools (2027) (College Test Preparation)
- List rank#7
- Price$20.66
- Rating4.6
- Reviews84
-
The LSAT Trainer: A Remarkable Self-Study Guide For The Self-Driven Student
by Mike Kim
- List rank#8
- Price$42.29
- Rating4.7
- Reviews5,571
-
A Guide to the Project Management Body of Knowledge (PMBOK® Guide) ― Eighth Edition and The Standard for Project Management
by Project Management Institute
- List rank#9
- Price$71.58
- Rating4.5
- Reviews308
-
The College Panda's SAT Math: Advanced Guide and Workbook
by Nielson Phu
- List rank#10
- Price$27.85
- Rating4.7
- Reviews2,682
FAQ
Is Test Prep & Study Guides a good niche for Amazon KDP?
Its KDPTop opportunity score is 49/100, which makes it fairly competitive. The median best seller has 164 reviews and sells for $26.61.
How many reviews do you need to rank in Test Prep & Study Guides?
The median best seller has 164 reviews, and 39% of them have fewer than 100.
What do Test Prep & Study Guides best sellers cost?
The median price is $26.61; half of the best sellers are priced between $21.89 and $34.11.
Can new books break into Test Prep & Study Guides?
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.