KDP categories · Top KDP authors
John Heffner: Amazon KDP author data
As of Nov 6, 2026, John Heffner has 14 books on Amazon, 8 of them on a best-seller list in the last 30 days (best rank #27), mostly in Intermediate Readers, United States, 1800s.
| Median price | $9.99 |
|---|---|
| Price range (middle 50%) | $6.99 – $13.49 |
| Median reviews | 11 |
| Total reviews | 22 |
| New books (30 days) | 8 |
| Breakout books (30 days) | 2 |
What stands out
- 57% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $9.99, 57% above the median of their main category, Intermediate Readers.
- 8 new books in the last 30 days, 2 of them broke into a Best Sellers list.
John Heffner's best-ranked books
-
Making of a Physician: How the 1970s Shaped a Generation of Doctors
by John Heffner
- Price$19.95
- Rating4.8
- Reviews11
-
Making of a Physician: How the 1970s Shaped a Generation of Doctors
by John Heffner
- Price$9.99
- Rating4.8
- Reviews11
-
Wrinkles in the West (The Legend of Bugsy McGee)
by John Heffner
- Price$13.49
- Reviews-
-
The Impossible Resort: The Extraordinary Adventures of the Maxi Boys
by John Heffner
- Price$13.49
- Reviews-
-
The Impossible Resort: The Extraordinary Adventures of the Maxi Boys
by John Heffner
- Price$6.99
- Reviews-
- Published2026-09
-
Wrinkles in the West (The Legend of Bugsy McGee)
by John Heffner
- Price$9.99
- Reviews-
-
Trouble on the Tracks (The Legend of Bugsy McGee Book 2)
by John Heffner
- Price$6.99
- Reviews-
- Published2026-10
-
The Whispering Caverns: Attack of the Aquapuffies (The General Kwan Adventures Book 1)
by John Heffner
- Price$0
- Reviews-
- Published2026-08
-
Project Chimera (The General Kwan Adventures Book 2)
by John Heffner
- Price$6.99
- Reviews-
- Published2026-09
-
The Maxi Boys Take on New York: The Extraordinary Adventures of the Maxi Boys
by John Heffner
- Price$13.49
- Reviews-
Main categories
FAQ
How many books does John Heffner have on Amazon?
KDPTop tracks 14 of their books; 8 made an Amazon list in the last 30 days.
Which categories does John Heffner publish in?
Their books chart most often in Intermediate Readers, United States, 1800s.
How does John Heffner price their books?
The median price is $9.99; half of the books cost $6.99–$13.49.
Has John Heffner released new books recently?
8 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.