KDP categories · Top KDP authors
Preston Masterprep: Amazon KDP author data
As of Nov 6, 2026, Preston Masterprep has 13 books on Amazon, 8 of them on a best-seller list in the last 30 days (best rank #3), mostly in Clinical, Nursing, Allied Health Services.
| Median price | $27.99 |
|---|---|
| Price range (middle 50%) | $26.75 – $29.75 |
| Median reviews | 78 |
| Total reviews | 842 |
| New listings (30 days, incl. new editions) | 2 |
| Breakout books (30 days) | 2 |
What stands out
- 62% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $27.99, 30% below the median of their main category, Clinical.
Preston Masterprep's best-ranked books
-
NCLEX-RN Exam Prep: Clinical Judgment Made Clear with Practice Questions, Detailed Rationales, Full-Length Exams, NGN Case Studies, Clinical Cards, Body System Review & 2, 4, and 8 Week Study Plans
by Preston Masterprep
- Price$37
- Rating4.7
- Reviews85
- Published2026-09
-
PTCB® Exam Prep: 3,000+ Questions, 15 Full-Length Tests, Proven Strategies & a 6-Week Study Plan for Pharmacy Technician Certification Success.
by Preston Masterprep
- Price$27
- Rating4.4
- Reviews175
-
NHA CCMA® Study Guide: Complete Prep for the Certified Clinical Medical Assistant Exam, Illustrated Review, Full-Length Practice Exams, Every Answer Explained, and Step-by-Step Weekly Study Plans
by Preston Masterprep
- Price$32
- Rating4.4
- Reviews21
-
MCAT® Exam Prep: The Strategic Guide to the New MCAT Focus | 3,000+ Practice Questions, 10 Full-Length Tests, Proven Strategies & Stress-Free Study Plan for a 515+ Score
by Preston Masterprep
- Price$29
- Rating4.5
- Reviews78
-
NHA CCMA® Study Guide: 3,000+ Practice Questions with Increasing Difficulty, 15 Realistic Mock Exams, Proven Strategies, and a Stress-Free Study Plan for Exam Confidence and Success.
by Preston Masterprep
- Price-
- Rating4.4
- Reviews21
-
NCLEX-RN Exam Prep: 3,000+ Practice Questions with Increasing Difficulty, 15 Full Mock Exams, Proven Clinical Judgment Strategies, and a Stress-Free Study Plan to Pass with Confidence
by Preston Masterprep
- Price$27.99
- Rating4.7
- Reviews85
-
MCAT® Exam Prep: The Strategic Guide to the New MCAT Focus | 3,000+ Practice Questions, 10 Full-Length Tests, Proven Strategies & Stress-Free Study Plan for a 515+ Score
by Preston Masterprep
- Price$39
- Rating4.5
- Reviews78
-
PTCB® Exam Prep: 3,000+ Questions, 15 Full-Length Tests, Proven Strategies & a 6-Week Study Plan for Pharmacy Technician Certification Success.
by Preston Masterprep
- Price$23
- Rating4.4
- Reviews175
-
NCLEX-RN Exam Prep: Clinical Judgment Made Clear with Practice Questions, Detailed Rationales, Full-Length Exams, NGN Case Studies, Clinical Cards, Body System Review & 2, 4, and 8 Week Study Plans
by Preston Masterprep
- Price$26
- Rating4.7
- Reviews85
- Published2025-09
-
NHA CCMA® Study Guide : Complete Prep for the Certified Clinical Medical Assistant Exam, Illustrated Review, Full-Length Practice Exams, Every Answer Explained, and Step-by-Step Weekly Study Plans
by Preston Masterprep
- Price$24
- Rating4.4
- Reviews21
- Published2025-08
Main categories
FAQ
How many books does Preston Masterprep have on Amazon?
KDPTop tracks 13 of their books; 8 made an Amazon list in the last 30 days.
Which categories does Preston Masterprep publish in?
Their books chart most often in Clinical, Nursing, Allied Health Services.
How does Preston Masterprep price their books?
The median price is $27.99; half of the books cost $26.75–$29.75.
Has Preston Masterprep released new books recently?
2 new books in the last 30 days, 2 of which reached a Best Sellers list.
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.