KDP categories · Top KDP authors
Tim Castle: Amazon KDP author data
As of Nov 6, 2026, Tim Castle has 5 books on Amazon, 3 of them on a best-seller list in the last 30 days (best rank #5), mostly in Job Hunting & Careers, Guides, Interviewing.
| Median price | $13.69 |
|---|---|
| Price range (middle 50%) | $4.97 – $21.99 |
| Median reviews | 512 |
| Total reviews | 1,030 |
| New books (30 days) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- 60% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
Tim Castle's best-ranked books
-
The Art of Negotiation: How To Get What You Want (Every Time)
by Tim Castle
- Price$4.95
- Rating4.6
- Reviews512
-
The Art of Negotiation: How to get what you want (every time)
by Tim Castle
- Price$13.69
- Rating4.6
- Reviews512
-
The First Domino: How To Land Your First Client In 90 Days Or Under
by Tim Castle
- Price$4.97
- Rating5.0
- Reviews6
-
Magnetic Influence: How to Negotiate and Persuade in a Disrupted World
by Tim Castle
- Price$34.34
- Reviews-
- Published2026-06
-
Magnetic Influence: How to Negotiate and Persuade in a Disrupted World
by Tim Castle
- Price$21.99
- Reviews-
- Published2026-06
Main categories
FAQ
How many books does Tim Castle have on Amazon?
KDPTop tracks 5 of their books; 3 made an Amazon list in the last 30 days.
Which categories does Tim Castle publish in?
Their books chart most often in Job Hunting & Careers, Guides, Interviewing.
How does Tim Castle price their books?
The median price is $13.69; half of the books cost $4.97–$21.99.
Has Tim Castle 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.