KDP categories · Top KDP authors
Alex Xu: Amazon KDP author data
Alex Xu has 6 books on Amazon, 6 of them on a best-seller list in the last 30 days (best rank #1), mostly in Web Development & Design, Web Services, Object-Oriented Software Design.
6Books on Amazon
6Listed in 30 days
4.6Average rating
| Median price | $31.04 |
|---|---|
| Price range (middle 50%) | $30.63 – $37.85 |
| Median reviews | 1,584 |
| Total reviews | 10,253 |
| New books (30 days) | 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.
Alex Xu's best-ranked books
-
System Design Interview – An insider's guide
by Alex Xu
- Price$12.99
- Rating4.6
- Reviews3,411
- Published2020-06
-
System Design Interview – An insider's guide
by Alex Xu
- Price$39.99
- Rating4.6
- Reviews3,411
- Published2020-06
-
System Design Interview – An Insider's Guide: Volume 2
by Alex Xu
- Price$30.63
- Rating4.6
- Reviews1,584
- Published2023-12
-
System Design Interview – An Insider's Guide: Volume 2
by Alex Xu
- Price$30.63
- Rating4.6
- Reviews1,584
-
Coding Interview Patterns: Nail Your Next Coding Interview
by Alex Xu
- Price$31.45
- Rating4.6
- Reviews228
-
Object Oriented Design Interview: An Insider’s Guide
by Alex Xu
- Price$44.99
- Rating4.6
- Reviews35
- Published2025-06
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.