KDP categories · Top KDP authors
Kathy Sierra: Amazon KDP author data
As of Nov 6, 2026, Kathy Sierra has 5 books on Amazon, 5 of them on a best-seller list in the last 30 days (best rank #1), mostly in Java, Object-Oriented Design, Object-Oriented Software Design.
| Median price | $17.02 |
|---|---|
| Price range (middle 50%) | $16.39 – $41.79 |
| Median reviews | 699 |
| Total reviews | 4,013 |
| New listings (30 days, incl. new editions) | 0 |
| Breakout books (30 days) | 0 |
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 $17.02, 55% below the median of their main category, Java.
Kathy Sierra's best-ranked books
-
Head First Java: A Brain-Friendly Guide
by Kathy Sierra
- Price$43.99
- Rating4.6
- Reviews699
- Published2022-06
-
-
Head First Java, 2nd Edition
by Kathy Sierra
- Price$12.53
- Rating4.4
- Reviews2,073
- Published2005-03
-
Badass: Making Users Awesome
by Kathy Sierra
- Price$16.39
- Rating4.6
- Reviews271
-
Badass: Making Users Awesome
by Kathy Sierra
- Price$17.02
- Rating4.6
- Reviews271
- Published2015-03
Main categories
FAQ
How many books does Kathy Sierra have on Amazon?
KDPTop tracks 5 of their books; 5 made an Amazon list in the last 30 days.
Which categories does Kathy Sierra publish in?
Their books chart most often in Java, Object-Oriented Design, Object-Oriented Software Design.
How does Kathy Sierra price their books?
The median price is $17.02; half of the books cost $16.39–$41.79.
Has Kathy Sierra released new books recently?
0 new books in the last 30 days.
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.