KDP categories · Top KDP authors
Bob Ojala: Amazon KDP author data
As of Nov 6, 2026, Bob Ojala has 21 books on Amazon, 5 of them on a best-seller list in the last 30 days (best rank #2), mostly in Repair & Maintenance, Constitutional Law, Human Rights.
| Median price | $3.99 |
|---|---|
| Price range (middle 50%) | $3.99 – $4.95 |
| Median reviews | 6 |
| Total reviews | 101 |
| New books (30 days) | 2 |
| Breakout books (30 days) | 2 |
What stands out
- Median price $3.99, 64% below the median of their main category, Repair & Maintenance.
Bob Ojala's best-ranked books
-
UNDERCOVER AGAIN: Fighting Human Trafficking
by Bob Ojala
- Price$3.99
- Rating5.0
- Reviews11
- Published2026-09
-
UNDERCOVER: Hostages or Slaves
by Bob Ojala
- Price$3.99
- Rating5.0
- Reviews11
-
Autobiography of a Ship's Marine Surveyor: Surveyors Are Made, Not Born!
by Bob Ojala
- Price$4.95
- Rating4.5
- Reviews2
-
World Travel & Adventures of a Ship's Marine Surveyor: How to Get Dirty and Still Be Treated With Respect
by Bob Ojala
- Price$2.99
- Rating4.6
- Reviews20
-
Sweetwater Sailors: Great Lakes Merchant Marine (The Ships, the Jobs, the Men and Women, and their Families)
by Bob Ojala
- Price$2.99
- Rating4.5
- Reviews4
- Published2026-05
-
Sweetwater Sailors
by Bob Ojala
- Price$9.99
- Rating4.7
- Reviews29
- Published2021-02
-
KIDNAPPED: A Tugboater’s Tale
by Bob Ojala
- Price$3.99
- Rating5.0
- Reviews10
- Published2026-09
-
KIDNAPPED: A Tugboater's Tale
by Bob Ojala
- Price$3.99
- Rating4.3
- Reviews8
- Published2026-09
-
World Travel & Adventures of a Ship's Marine Surveyor: How to Get Dirty and Still Be Treated With Respect
by Bob Ojala
- Price$36.84
- Rating5.0
- Reviews2
- Published2019-06
-
Commercial Fishermen - Great Lakes Style
by Bob Ojala
- Price$25
- Rating5.0
- Reviews2
- Published2023-06
Main categories
FAQ
How many books does Bob Ojala have on Amazon?
KDPTop tracks 21 of their books; 5 made an Amazon list in the last 30 days.
Which categories does Bob Ojala publish in?
Their books chart most often in Repair & Maintenance, Constitutional Law, Human Rights.
How does Bob Ojala price their books?
The median price is $3.99; half of the books cost $3.99–$4.95.
Has Bob Ojala released new books recently?
2 new books in the last 30 days, 2 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.