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Hyun Erwin: Amazon KDP author data
As of Nov 6, 2026, Hyun Erwin has 4 books on Amazon, 3 of them on a best-seller list in the last 30 days (best rank #1), mostly in Computer Science, Artificial Intelligence, Expert Systems.
| Median price | $9.99 |
|---|---|
| Price range (middle 50%) | $9.93 – $20.74 |
| Median reviews | 147 |
| Total reviews | 484 |
| New listings (30 days, incl. new editions) | 1 |
| Breakout books (30 days) | 1 |
Hyun Erwin's best-ranked books
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Agentic AI Engineering: Systems That Reason and Act Autonomously – Designing, Building, and Prompting LLM-Based Agents for Real-World Deployment
by Hyun Erwin
- Price$31.50
- Rating4.6
- Reviews147
-
AI Engineering: Building the Next Generation of Intelligent Systems – Developing Prompt Workflows, AI Agents, and LLM Architectures for Production
by Hyun Erwin
- Price$9.99
- Rating4.5
- Reviews44
- Published2026-08
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Agentic AI Engineering: Systems That Reason and Act Autonomously – Designing, Building, and Prompting LLM-Based Agents for Real-World Deployment
by Hyun Erwin
- Price$9.87
- Rating4.6
- Reviews147
-
Agentic AI Engineering: Systems That Reason and Act Autonomously – Designing, Building, and Prompting LLM-Based Agents for Real-World Deployment
by Hyun Erwin
- Price-
- Rating4.6
- Reviews147
- Published2026-03
Main categories
FAQ
How many books does Hyun Erwin have on Amazon?
KDPTop tracks 4 of their books; 3 made an Amazon list in the last 30 days.
Which categories does Hyun Erwin publish in?
Their books chart most often in Computer Science, Artificial Intelligence, Expert Systems.
How does Hyun Erwin price their books?
The median price is $9.99; half of the books cost $9.93–$20.74.
Has Hyun Erwin released new books recently?
1 new book 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.