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Quantum Prep Publishing: Amazon KDP author data
Quantum Prep Publishing has 20 books on Amazon, 14 of them on a best-seller list in the last 30 days (best rank #1), mostly in Graduate School, Biostatistics, Research.
20Books on Amazon
14Listed in 30 days
4.7Average rating
| Median price | $25.99 |
|---|---|
| Price range (middle 50%) | $21.23 – $29.98 |
| Median reviews | 146 |
| Total reviews | 3,748 |
| New books (30 days) | 6 |
| Breakout books (30 days) | 4 |
What stands out
- 70% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- 6 new books in the last 30 days, 4 of them broke into a Best Sellers list.
Quantum Prep Publishing's best-ranked books
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![ACT Study Guide & Test Prep [2 in 1]: The Ultimate All-in-One Study System to Ace the ACT book cover by Quantum Prep Publishing](https://images-na.ssl-images-amazon.com/images/I/61oiHrw8WPL._AC_UL300_SR300,200_.jpg)
ACT Study Guide & Test Prep [2 in 1]: The Ultimate All-in-One Study System to Ace the ACT with Exam-Ready Practice Questions, Full-Length Practice Tests, and Easy-to-Follow Explanations
by Quantum Prep Publishing
- Price$35.75
- Rating4.8
- Reviews507
- Published2026-09
-
GMAT Test Prep: The Complete and Up-to-Date Prep Book with Full-Length Practice Tests and Easy-to-Follow Explanations to Ace the GMAT Exam
by Quantum Prep Publishing
- Price$29.99
- Rating4.6
- Reviews316
-
MCAT Test Prep: The Complete and Up-to-Date Prep Book with Full-Length Practice Tests and Step-by-Step Explanations to Ace the MCAT Exam
by Quantum Prep Publishing
- Price$41.56
- Rating4.9
- Reviews142
- Published2025-12
-
![ATI TEAS Study Guide & Test Prep [2 in 1]: The Ultimate All-in-One Study System to Ace the book cover by Quantum Prep Publishing](https://images-na.ssl-images-amazon.com/images/I/61oDsOvuXAL._AC_UL300_SR300,200_.jpg)
ATI TEAS Study Guide & Test Prep [2 in 1]: The Ultimate All-in-One Study System to Ace the ATI TEAS with Exam-Ready Practice Questions, Full-Length Practice Tests, and Easy-to-Follow Explanations
by Quantum Prep Publishing
- Price$28.41
- Rating4.9
- Reviews130
-
GMAT Test Prep: The Complete and Up-to-Date Prep Book with Full-Length Practice Tests and Easy-to-Follow Explanations to Ace the GMAT Exam
by Quantum Prep Publishing
- Price$31.95
- Rating4.6
- Reviews317
-
GRE Test Prep: The Complete and Up-to-Date Prep Book with Full-Length Practice Tests and Easy-to-Follow Explanations to Ace the GRE Exam
by Quantum Prep Publishing
- Price$29.95
- Rating4.5
- Reviews343
-
ACT Test Prep: The Complete and Fully Updated Prep Book to Ace the ACT with Full-Length Practice Tests, Exam-Ready Practice Questions & Easy-to-Follow Explanations
by Quantum Prep Publishing
- Price$29.90
- Rating4.2
- Reviews45
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GRE Test Prep: The Complete and Up-to-Date Prep Book with Full-Length Practice Tests and Easy-to-Follow Explanations to Ace the GRE Exam
by Quantum Prep Publishing
- Price$25.99
- Rating4.5
- Reviews343
-
![ACT Study Guide & Test Prep [2 in 1]: The Ultimate All-in-One Study System to Ace the ACT book cover by Quantum Prep Publishing](https://images-na.ssl-images-amazon.com/images/I/81Vj7bHb8aL._AC_UL300_SR300,200_.jpg)
ACT Study Guide & Test Prep [2 in 1]: The Ultimate All-in-One Study System to Ace the ACT with Exam-Ready Practice Questions, Full-Length Practice Tests, and Easy-to-Follow Explanations
by Quantum Prep Publishing
- Price$25.99
- Rating4.8
- Reviews504
-
ACT Test Prep: The Complete and Fully Updated Prep Book to Ace the ACT Exam with Full-Length Practice Tests and Easy-to-Follow Explanations
by Quantum Prep Publishing
- Price-
- Rating3.2
- Reviews54
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.