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Jacob Ren: Amazon KDP author data
Jacob Ren has 46 books on Amazon, 46 of them on a best-seller list in the last 30 days (best rank #2), mostly in Application Development, Web Development, Languages & Tools.
46Books on Amazon
46Listed in 30 days
4.5Average rating
| Median price | $3.99 |
|---|---|
| Price range (middle 50%) | $3.99 – $3.99 |
| Median reviews | 1 |
| Total reviews | 6 |
| New books (30 days) | 30 |
| Breakout books (30 days) | 21 |
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 $3.99, 50% below the median of their main category, Application Development.
- 30 new books in the last 30 days, 21 of them broke into a Best Sellers list.
Jacob Ren's best-ranked books
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AWS for Full-Stack Developers: A Practical Guide to Getting Started with AWS Cloud Deployment (Practical Programming)
by Jacob Ren
- Price$3.99
- Reviews-
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C# for Absolute Beginners: Learn C# the Practical Way (Practical Programming)
by Jacob Ren
- Price$3.99
- Reviews-
-
Supabase for Full-Stack Developers: Build Full-Stack Apps with Postgres, Auth, Storage, and Realtime (Practical Programming)
by Jacob Ren
- Price$3.99
- Reviews-
-
Postgres for Beginner Full-Stack Developers: Your Practical Guide to Learning PostgreSQL from Scratch (Practical Programming)
by Jacob Ren
- Price$3.99
- Reviews-
-
Practical PHP for Beginners: An Easy to Follow Guide to Getting Started with Programming in PHP (Practical Programming)
by Jacob Ren
- Price$3.99
- Reviews-
-
Practical Laravel for Beginners: A Beginner's Guide to Creating Laravel Applications (Practical Programming)
by Jacob Ren
- Price$3.99
- Reviews-
- Published2026-08
-
React for Beginners: Building Modern Interfaces with Components, Hooks, and State (Practical Programming)
by Jacob Ren
- Price$2.99
- Rating5.0
- Reviews1
-
Advanced Spring Boot for Java Developers: Production-Ready Patterns for Real-World Java APIs (Practical Programming)
by Jacob Ren
- Price$0
- Reviews-
- Published2026-07
-
Advanced Laravel: Real-World Patterns for Building Scalable, Production-Ready Applications (Practical Programming)
by Jacob Ren
- Price$3.99
- Reviews-
-
JavaScript for Beginners: A Practical, No-Fluff Guide to Writing Your First Code (Practical Programming)
by Jacob Ren
- Price$2.99
- Rating5.0
- Reviews1
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.