KDP categories · Top KDP authors
Test Flash Cards: Amazon KDP category data
Amazon Books Best Sellers data for Test Flash Cards, updated Nov 2, 2026: median price $16.02, median 464 reviews, average rating 4.6 and a KDPTop opportunity score of 28/100 (highly competitive).
| Price range (middle 50%) | $5.99 – $25.76 |
|---|---|
| Average rating | 4.6 |
| New releases (90 days) | 5% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 35% of the parent category Studying & Workbooks (1,320), one of the easier corners under it.
- Its review barrier is higher than in 75% of Books categories: the median best seller has 464 reviews, so new books need time to build up.
- Only 5% of its best sellers are under 90 days old, fewer than in 75% of Books categories: established titles hold the list.
Top 10 Test Flash Cards best sellers
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2026/2027 ASVAB For Dummies: Book + 7 Practice Tests, Flashcards, and Videos Online
- List rank#3
- 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#4
- Price$7.50
- Rating4.8
- Reviews12,319
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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#6
- Price$20.66
- Rating4.6
- Reviews84
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Humble Math - 100 Days of Timed Tests: Addition and Subtraction: Grades K-2, Math Drills, Digits 0-20, Reproducible Practice Problems
by Humble Math
- List rank#7
- Price$5.99
- Rating4.8
- Reviews6,543
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US Citizenship Flash Cards 2026 with 128 Civics Questions and English Literacy Cards for Naturalization Test
by American Prudence
- List rank#8
- Price$9.97
- Rating4.7
- Reviews3,978
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My First Book of Baby Signs: 40 Essential Signs to Learn and Practice
by Lane Rebelo
- List rank#9
- Price$6.94
- Rating4.8
- Reviews7,879
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US Citizenship Test Study Guide 2026 and 2027: Prep Book for all 128 USCIS Civic Test Questions for US Naturalization to Become an American Citizen [Includes Audiobook]
by Exampedia
- List rank#10
- Price$11.99
- Rating4.7
- Reviews93
FAQ
Is Test Flash Cards a good niche for Amazon KDP?
Its KDPTop opportunity score is 28/100, which makes it highly competitive. The median best seller has 464 reviews and sells for $16.02.
How many reviews do you need to rank in Test Flash Cards?
The median best seller has 464 reviews, and 26% of them have fewer than 100.
What do Test Flash Cards best sellers cost?
The median price is $16.02; half of the best sellers are priced between $5.99 and $25.76.
Can new books break into Test Flash Cards?
5% 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.