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Optimal Prep Publishing: Amazon KDP author data
Optimal Prep Publishing has 19 books on Amazon, 19 of them on a best-seller list in the last 30 days (best rank #1), mostly in Mathematics, Test Prep & Study Guides, Higher & Continuing Education.
| Median price | $29.90 |
|---|---|
| Price range (middle 50%) | $25.99 – $35.64 |
| Median reviews | 226 |
| Total reviews | 5,857 |
| New books (30 days) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- 100% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $29.90, 41% above the median of their main category, Mathematics.
Optimal Prep Publishing's best-ranked books
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SAT Test Prep: The Complete & Up-to-Date Prep Book with Full-Length Practice Tests, Test-Ready Practice Questions & Step-by-Step Explanations to Ace the Digital SAT
by Optimal Prep Publishing
- Price$29.90
- Rating4.5
- Reviews592
- Published2026-04
-
![ASVAB Study Guide & Test Prep [2 in 1]: The Ultimate All-in-One Study System to Master Eve book cover by Optimal Prep Publishing](https://images-na.ssl-images-amazon.com/images/I/61hWkbzSqxL._AC_UL300_SR300,200_.jpg)
ASVAB Study Guide & Test Prep [2 in 1]: The Ultimate All-in-One Study System to Master Every ASVAB Section and Ace the AFQT with Exam-Ready Practice Tests and Step-by-Step Explanations
by Optimal Prep Publishing
- Price$35.62
- Rating4.6
- Reviews569
- Published2026-03
-
![ASVAB Study Guide & Test Prep [2 in 1]: The Ultimate All-in-One Study System to Master Eve book cover by Optimal Prep Publishing](https://images-na.ssl-images-amazon.com/images/I/71kvGabuz+L._UX300__PJkp-sticker-v1,TopRight,0,-50_AC_UL300_SR300,200_.jpg)
ASVAB Study Guide & Test Prep [2 in 1]: The Ultimate All-in-One Study System to Master Every ASVAB Section and Ace the AFQT with Exam-Ready Practice Tests and Step-by-Step Explanations
by Optimal Prep Publishing
- Price$29.99
- Rating4.6
- Reviews569
-
GED Test Prep: The Complete and Fully Updated Prep Book to Ace the GED Exam with Exam-Ready Practice Tests and Easy-to-Follow Explanations
by Optimal Prep Publishing
- Price$29.72
- Rating4.4
- Reviews519
- Published2025-11
-
SAT Test Prep: The Complete & Up-to-Date Prep Book with Full-Length Practice Tests, Exam-Ready Practice Questions & Step-by-Step Explanations to Ace the Digital SAT
by Optimal Prep Publishing
- Price$13.74
- Rating3.6
- Reviews309
- Published2025-09
-
GED Test Prep: The Complete and Fully Updated Prep Book to Ace the GED Exam with Exam-Ready Practice Tests and Easy-to-Follow Explanations
by Optimal Prep Publishing
- Price$25.99
- Rating4.4
- Reviews519
- Published2025-09
-
ASVAB Study Guide: The Complete & Up-to-Date Test Prep with 2000+ Practice Questions, 6 Full-Length Practice Tests & Step-by-Step Explanations to Ace the AFQT
by Optimal Prep Publishing
- Price$23.95
- Rating4.3
- Reviews94
-
ISEE Lower Level Test Prep: The Complete and Up-to-Date Prep Book with Full Length Practice Tests and Easy-to-Follow Explanations to Ace the ISEE Lower Level Exam
by Optimal Prep Publishing
- Price$35.95
- Rating4.6
- Reviews200
-
LSAT Test Prep: The Complete & Up-to-Date Prep Book with Full-Length Practice Tests, Exam-Ready Practice Questions & Step-by-Step Explanations to Ace the LSAT
by Optimal Prep Publishing
- Price$29.90
- Rating4.3
- Reviews226
- Published2026-03
-
SAT Test Prep: The Complete & Up-to-Date Prep Book with Full-Length Practice Tests, Test-Ready Practice Questions & Step-by-Step Explanations to Ace the Digital SAT
by Optimal Prep Publishing
- Price$29.90
- Rating4.5
- Reviews592
- Published2025-09
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.