KDP categories · Top KDP authors
Kor YX: Amazon KDP author data
As of Nov 6, 2026, Kor YX has 7 books on Amazon, 7 of them on a best-seller list in the last 30 days (best rank #22), mostly in Quality Control, Production & Operations, Total Quality Management.
| Median price | $3.99 |
|---|---|
| Price range (middle 50%) | $3.99 – $4.49 |
| Median reviews | 1 |
| Total reviews | 1 |
| New books (30 days) | 7 |
| Breakout books (30 days) | 1 |
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, 60% below the median of their main category, Quality Control.
- 7 new books in the last 30 days, 1 of them broke into a Best Sellers list.
Kor YX's best-ranked books
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AI-Assisted Root Cause Analysis: Using AI as a Thinking Partner in 5 Whys, Fishbone Diagrams, and Structured Problem Solving — Without Letting It Think for You (AI for Quality Professionals)
by Kor YX
- Price$4.99
- Reviews-
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AI Toolkit - Series 1 Quality & Management Systems: AI PROMPTS FOR INTERNAL AUDITORS (AI Toolkit – Series 1: Quality & Management Systems)
by Kor YX
- Price$3.99
- Rating5.0
- Reviews1
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AI Toolkit - Series 1 Quality & Management Systems: AI PROMPTS FOR QUALITY MANAGERS (AI Toolkit – Series 1: Quality & Management Systems)
by Kor YX
- Price$3.99
- Reviews-
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AI Toolkit - Series 1 Quality & Management Systems: AI PROMPTS FOR SUPPLIER QUALITY ENGINEERS (AI Toolkit – Series 1: Quality & Management Systems)
by Kor YX
- Price$3.99
- Reviews-
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AI Toolkit - Series 1 Quality & Management Systems: AI PROMPTS FOR IMS MANAGERS (AI Toolkit – Series 1: Quality & Management Systems)
by Kor YX
- Price$3.99
- Reviews-
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VDA 6.3 in Practice: What the Process Audit Doesn’t Show You on Paper (Practical Auditing)
by Kor YX
- Price$4.99
- Reviews-
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AI Toolkit - Series 1 Quality & Management Systems: AI PROMPTS FOR QUALITY ENGINEERS (AI Toolkit – Series 1: Quality & Management Systems)
by Kor YX
- Price$3.99
- Reviews-
Main categories
FAQ
How many books does Kor YX have on Amazon?
KDPTop tracks 7 of their books; 7 made an Amazon list in the last 30 days.
Which categories does Kor YX publish in?
Their books chart most often in Quality Control, Production & Operations, Total Quality Management.
How does Kor YX price their books?
The median price is $3.99; half of the books cost $3.99–$4.49.
Has Kor YX released new books recently?
7 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.