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Rockforge Ed.: Amazon KDP author data
Rockforge Ed. has 10 books on Amazon, 9 of them on a best-seller list in the last 30 days (best rank #1), mostly in SAT & PSAT, Graduate School, Science & Mathematics.
10Books on Amazon
9Listed in 30 days
4.7Average rating
| Median price | $25.40 |
|---|---|
| Price range (middle 50%) | $21.14 – $27.40 |
| Median reviews | 349 |
| Total reviews | 3,547 |
| New books (30 days) | 1 |
| Breakout books (30 days) | 1 |
What stands out
- 90% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $25.40, 154% above the median of their main category, SAT & PSAT.
Rockforge Ed.'s best-ranked books
-
SAT Test Prep: The Complete & Exam-Aligned Prep Book to Ace the Digital SAT®. Full-Length Practice Tests, Step-by-Step Explanations, and Test-Day Strategies
by Rockforge Ed.
- Price$25.90
- Rating4.9
- Reviews685
- Published2026-08
-
PSAT/NMSQT Test Prep: The Complete and Exam-Aligned Prep Book to Ace the Digital PSAT — Full-Length Practice Tests, Step-by-Step Explanations, & Expert Strategies
by Rockforge Ed.
- Price$25.90
- Rating4.9
- Reviews349
-
LSAT Prep Book: The Complete and Fully Updated Study Guide to Ace the New LSAT. Full-Length Practice Tests, Step-by-Step Explanations, & Test-Day Tips
by Rockforge Ed.
- Price$27.90
- Rating4.7
- Reviews349
-
GMAT Prep Book: The Complete and Fully Updated Test Prep Guide to Ace the GMAT Exam. Full-Length Practice Tests, Expert Strategies, & Step-by-Step Explanations
by Rockforge Ed.
- Price$19.90
- Rating4.9
- Reviews304
-
GMAT Prep Book: The Complete and Fully Updated Test Prep Guide to Ace the GMAT Exam. Full-Length Practice Tests, Expert Strategies, & Step-by-Step Explanations
by Rockforge Ed.
- Price$31.90
- Rating4.9
- Reviews304
-
LSAT Prep Book: The Complete and Fully Updated Study Guide to Ace the New LSAT. Full-Length Practice Tests, Step-by-Step Explanations, & Test-Day Tips
by Rockforge Ed.
- Price$29.90
- Rating4.7
- Reviews348
-
SAT Exam Prep: The Complete & Exam Aligned Study Guide to Prepare for the Digital SAT®. Full-Length Practice Tests, Step-by-Step Explanations and Test-Day Tips
by Rockforge Ed.
- Price$21.88
- Rating3.6
- Reviews158
-
SAT Test Prep: The Complete & Exam-Aligned Prep Book to Ace the Digital SAT®. Full-Length Practice Tests, Step-by-Step Explanations, and Test-Day Strategies
by Rockforge Ed.
- Price$20.90
- Rating4.9
- Reviews685
-
PSAT/NMSQT Test Prep: The Complete and Exam-Aligned Prep Book to Ace the Digital PSAT — Full-Length Practice Tests, Step-by-Step Explanations, & Expert Strategies
by Rockforge Ed.
- Price$20.90
- Rating4.9
- Reviews349
-
ACT Exam Prep: The Complete & Exam-Aligned Study Guide & Test Prep Book to Ace the ACT® – Content Review, Full-Length Practice Tests, Step-by-Step Explanations, and Expert Strategies
by Rockforge Ed.
- Price$24.90
- Rating5.0
- Reviews15
- Published2026-10
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.