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Rob Witcher: Amazon KDP author data
Rob Witcher has 8 books on Amazon, 6 of them on a best-seller list in the last 30 days (best rank #4), mostly in Security & Encryption, Certification, Security.
8Books on Amazon
6Listed in 30 days
4.7Average rating
| Median price | $39.27 |
|---|---|
| Price range (middle 50%) | $37.11 – $41.38 |
| Median reviews | 40 |
| Total reviews | 1,253 |
| New books (30 days) | 4 |
| Breakout books (30 days) | 4 |
What stands out
- 75% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $39.27, 79% above the median of their main category, Security & Encryption.
- 4 new books in the last 30 days, 4 of them broke into a Best Sellers list.
Rob Witcher's best-ranked books
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Destination CISSP: A Concise Guide
by Rob Witcher
- Price$39.27
- Rating4.6
- Reviews425
-
Destination CISSP: A Concise Guide
by Rob Witcher
- Price$39.27
- Rating4.6
- Reviews425
-
Destination CCSP: The Comprehensive Guide
by Rob Witcher
- Price$39.99
- Rating4.6
- Reviews6
-
Destination AAISM: The Complete Guide
by Rob Witcher
- Price$24.95
- Rating4.9
- Reviews10
-
Destination CCSP: The Comprehensive Guide
by Rob Witcher
- Price$42.79
- Rating4.6
- Reviews6
-
Destination AAISM: The Complete Guide
by Rob Witcher
- Price$34.95
- Rating4.9
- Reviews10
-
Destination CISSP: A Concise Guide
by Rob Witcher
- Price$53.62
- Rating4.7
- Reviews300
- Published2023-01
-
Destination CCSP: The Comprehensive Guide
by Rob Witcher
- Price-
- Rating4.7
- Reviews71
- Published2024-10
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.