KDP categories · Top KDP authors
John D. Clark: Amazon KDP author data
As of Nov 6, 2026, John D. Clark has 5 books on Amazon, 4 of them on a best-seller list in the last 30 days (best rank #3), mostly in Aeronautics & Astronautics, Aerospace, Energy Production & Extraction.
| Median price | $13.96 |
|---|---|
| Price range (middle 50%) | $12.99 – $15.69 |
| Median reviews | 1,709 |
| Total reviews | 5,131 |
| New books (30 days) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- 80% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $13.96, 25% below the median of their main category, Aeronautics & Astronautics.
John D. Clark's best-ranked books
-
Ignition!: An Informal History of Liquid Rocket Propellants
by John D. Clark
- Price$15.69
- Rating4.6
- Reviews1,709
- Published2018-05
-
Ignition!: An Informal History of Liquid Rocket Propellants (Rutgers University Press Classics)
by John D. Clark
- Price$19.92
- Rating4.6
- Reviews1,709
-
Ignition!: An Informal History of Liquid Rocket Propellants
by John D. Clark
- Price$13.96
- Rating4.6
- Reviews1,709
-
Chronic Kidney Disease in Cats: A Compassionate Owner’s Guide to CKD, Diet, and Home Care
by John D. Clark
- Price$7.99
- Rating5.0
- Reviews2
-
Chronic Kidney Disease in Cats: A Compassionate Owner’s Guide to CKD, Diet, and Home Care
by John D. Clark
- Price$12.99
- Rating5.0
- Reviews2
Main categories
FAQ
How many books does John D. Clark have on Amazon?
KDPTop tracks 5 of their books; 4 made an Amazon list in the last 30 days.
Which categories does John D. Clark publish in?
Their books chart most often in Aeronautics & Astronautics, Aerospace, Energy Production & Extraction.
How does John D. Clark price their books?
The median price is $13.96; half of the books cost $12.99–$15.69.
Has John D. Clark 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.