KDP categories · Top KDP authors
P R: Amazon KDP author data
As of Nov 6, 2026, P R has 22 books on Amazon, 10 of them on a best-seller list in the last 30 days (best rank #6), mostly in Computer Mathematics, Probability & Statistics, Applied.
| Median price | $2.99 |
|---|---|
| Price range (middle 50%) | $0.99 – $2.99 |
| Median reviews | 2 |
| Total reviews | 9 |
| New books (30 days) | 3 |
| Breakout books (30 days) | 1 |
What stands out
- Median price $2.99, 57% below the median of their main category, Computer Mathematics.
- 3 new books in the last 30 days, 1 of them broke into a Best Sellers list.
P R's best-ranked books
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Discrete Mathematics Essentials: A Quick Study Guide & Academic Reference: Learn the Core Concepts, Applications & Problem Solving for Computer Science, Engineering, and Beginners.
by P R
- Price$0.99
- Rating5.0
- Reviews2
-
Math into LaTeX: Essentials: A Complete Beginner’s Guide to Creating Mathematical Documents with LaTeX (Math into LaTeX: Masterclass Series)
by P R
- Price$5.99
- Rating5.0
- Reviews1
-
The Hundred-Page Guide to the Core Mathematics of Machine Learning: A Practical Introduction to Linear Algebra, Calculus, and Statistics with Python and ... (Mathematics for Machine Learning Book 2)
by P R
- Price$5
- Reviews-
-
Mathematics for Plumbers and Pipefitters Quick Study Guide: 21-Day Challenge – Learn Plumbing Math in Just 15 Minutes a Day
by P R
- Price$2.99
- Rating5.0
- Reviews1
-
Text and Math into LaTeX : A Quick Guide to LaTeX Mathematical Symbols, Equations, and Formatting for Beginners (Math into LaTeX: Masterclass Series)
by P R
- Price$2.99
- Rating3.0
- Reviews2
-
-
Mathematics for Machine Learning - Quick Study Guide & Reference: Made Simple with Linear Algebra, Calculus and Probability
by P R
- Price$0.99
- Rating5.0
- Reviews2
-
Math Adults Quick Study: Essential Mathematics Reference Guide
by P R
- Price$0.99
- Reviews-
-
Mathematics for Plumbers and Pipefitters Quick Study Guide: 21-Day Challenge – Learn Plumbing Math in Just 15 Minutes a Day
by P R
- Price$7.99
- Rating5.0
- Reviews1
-
Calculus AB & BC Formula Review Book 2025: Quick Guide with Key Concepts, Definitions, Examples & Test Strategies: Fast and Focused Prep for High School and College Calculus Success
by P R
- Price$0
- Reviews-
- Published2025-04
Main categories
FAQ
How many books does P R have on Amazon?
KDPTop tracks 22 of their books; 10 made an Amazon list in the last 30 days.
Which categories does P R publish in?
Their books chart most often in Computer Mathematics, Probability & Statistics, Applied.
How does P R price their books?
The median price is $2.99; half of the books cost $0.99–$2.99.
Has P R released new books recently?
3 new books in the last 30 days, 1 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.