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TestMastery Press: Amazon KDP author data
TestMastery Press has 10 books on Amazon, 10 of them on a best-seller list in the last 30 days (best rank #11), mostly in High School Entrance, Test Preparation, Test Prep & Study Guides.
10Books on Amazon
10Listed in 30 days
4.9Average rating
| Median price | $29.84 |
|---|---|
| Price range (middle 50%) | $23.28 – $32.97 |
| Median reviews | 120 |
| Total reviews | 1,261 |
| New books (30 days) | 10 |
| Breakout books (30 days) | 7 |
What stands out
- 100% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- 10 new books in the last 30 days, 7 of them broke into a Best Sellers list.
TestMastery Press's best-ranked books
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New York City SHSAT Test Prep: The Complete & Fully Updated Prep System to Master the SHSAT – Easy-to-Follow Explanations, Test-Day Tips, and Full-Length Practice Tests
by TestMastery Press
- Price$22.71
- Rating5.0
- Reviews111
- Published2026-10
-
ISEE Upper Level Test Prep: The Complete & Fully Updated Prep System to Master the ISEE Upper Level Exam – Easy-to-Follow Explanations, Test-Day Tips, and Full-Length Practice Tests
by TestMastery Press
- Price$39.79
- Rating4.9
- Reviews119
-
New York City SHSAT Test Prep: The Complete & Fully Updated Prep System to Master the SHSAT – Easy-to-Follow Explanations, Test-Day Tips, and Full-Length Practice Tests
by TestMastery Press
- Price$19.99
- Rating5.0
- Reviews111
- Published2026-09
-
ISEE Lower Level Test Prep: The Complete & Fully Updated Prep System to Master the ISEE Lower Level Exam – Easy-to-Follow Explanations, Test-Day Tips, and Full-Length Practice Tests
by TestMastery Press
- Price$33.96
- Rating4.9
- Reviews149
- Published2026-08
-
SSAT Upper Level Test Prep: The Complete & Fully Updated Prep System to Master the SSAT – Easy-to-Follow Explanations, Test-Day Tips, and Full-Length Practice Tests
by TestMastery Press
- Price$19.99
- Rating4.9
- Reviews130
-
ISEE Middle Level Test Prep: The Complete & Fully Updated Prep System to Master the ISEE Middle Level Exam – Easy-to-Follow Explanations, Test-Day Tips, and Full-Length Practice Tests
by TestMastery Press
- Price$34.95
- Rating4.9
- Reviews120
-
ISEE Lower Level Test Prep: The Complete & Fully Updated Prep System to Master the ISEE Lower Level Exam – Easy-to-Follow Explanations, Test-Day Tips, and Full-Length Practice Tests
by TestMastery Press
- Price$29.99
- Rating4.9
- Reviews150
-
SSAT Upper Level Test Prep: The Complete & Fully Updated Prep System to Master the SSAT – Easy-to-Follow Explanations, Test-Day Tips, and Full-Length Practice Tests
by TestMastery Press
- Price$29.70
- Rating4.9
- Reviews131
-
ISEE Middle Level Test Prep: The Complete & Fully Updated Prep System to Master the ISEE Middle Level Exam – Easy-to-Follow Explanations, Test-Day Tips, and Full-Length Practice Tests
by TestMastery Press
- Price$24.99
- Rating4.9
- Reviews120
-
ISEE Upper Level Test Prep: The Complete & Fully Updated Prep System to Master the ISEE Upper Level Exam – Easy-to-Follow Explanations, Test-Day Tips, and Full-Length Practice Tests
by TestMastery Press
- Price$29.99
- Rating4.9
- Reviews120
Main categories
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.