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Yannis Tzonis: Amazon KDP author data
As of Nov 6, 2026, Yannis Tzonis has 4 books on Amazon, 4 of them on a best-seller list in the last 30 days (best rank #8), mostly in User Experience & Usability, Web Design, Programming & App Development.
| Median price | $2.99 |
|---|---|
| Price range (middle 50%) | $2.99 – $4.74 |
| Median reviews | 2 |
| Total reviews | 5 |
| New books (30 days) | 4 |
| Breakout books (30 days) | 4 |
What stands out
- Median price $2.99, 89% below the median of their main category, User Experience & Usability.
- 4 new books in the last 30 days, 4 of them broke into a Best Sellers list.
Yannis Tzonis's best-ranked books
-
The Principles of UX in the Age of AI: The UX Quality-Control System for AI-Built Apps (Quality Control for AI-Built Apps)
by Yannis Tzonis
- Price$2.99
- Rating5.0
- Reviews2
- Published2026-09
-
The Principles of UX in the Age of AI: The UX Quality-Control System for AI-Built Apps
by Yannis Tzonis
- Price$9.99
- Rating5.0
- Reviews2
-
THE DEV DICTIONARY: Plain-English Terms for Every Team at Your Company and Anyone Building with AI (Quality Control for AI-Built Apps)
by Yannis Tzonis
- Price$2.99
- Rating5.0
- Reviews1
-
SEO ENGINEERED: Search Visibility Architecture for Web Apps at Scale (Quality Control for AI-Built Apps)
by Yannis Tzonis
- Price$2.99
- Reviews-
Main categories
FAQ
How many books does Yannis Tzonis have on Amazon?
KDPTop tracks 4 of their books; 4 made an Amazon list in the last 30 days.
Which categories does Yannis Tzonis publish in?
Their books chart most often in User Experience & Usability, Web Design, Programming & App Development.
How does Yannis Tzonis price their books?
The median price is $2.99; half of the books cost $2.99–$4.74.
Has Yannis Tzonis released new books recently?
4 new books in the last 30 days, 4 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.