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James R Martin Jr: Amazon KDP author data
As of Nov 6, 2026, James R Martin Jr has 2 books on Amazon, 2 of them on a best-seller list in the last 30 days (best rank #8), mostly in Education & Reference, Study Aids, College Guides.
| Median price | $14.99 |
|---|---|
| Price range (middle 50%) | $12.49 – $17.49 |
| Median reviews | 43 |
| Total reviews | 86 |
| New listings (30 days, incl. new editions) | 2 |
| Breakout books (30 days) | 2 |
What stands out
- Median price $14.99, 31% above the median of their main category, Education & Reference.
James R Martin Jr's best-ranked books
-
Should I Be an Engineer?: Everything You Need to Choose Your Engineering Path
by James R Martin Jr
- Price$19.99
- Rating5.0
- Reviews43
-
Should I Be an Engineer?: Everything You Need to Choose Your Engineering Path
by James R Martin Jr
- Price$9.99
- Rating5.0
- Reviews43
- Published2026-10
Main categories
FAQ
How many books does James R Martin Jr have on Amazon?
KDPTop tracks 2 of their books; 2 made an Amazon list in the last 30 days.
Which categories does James R Martin Jr publish in?
Their books chart most often in Education & Reference, Study Aids, College Guides.
How does James R Martin Jr price their books?
The median price is $14.99; half of the books cost $12.49–$17.49.
Has James R Martin Jr 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.