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Michael Hartmann: Amazon KDP author data
As of Nov 6, 2026, Michael Hartmann has 13 books on Amazon, 13 of them on a best-seller list in the last 30 days (best rank #20), mostly in Solid-State Physics, Organic, Biochemistry.
| Median price | $8.59 |
|---|---|
| Price range (middle 50%) | $7.29 – $8.59 |
| Median reviews | - |
| Total reviews | 0 |
| New listings (30 days, incl. new editions) | 13 |
| Breakout books (30 days) | 2 |
What stands out
- 100% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $8.59, 87% below the median of their main category, Solid-State Physics.
- 13 new listings in the last 30 days (new editions included), 2 of them broke into a Best Sellers list.
Michael Hartmann's best-ranked books
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Theories of Psychotherapy: A Concise Audio Guide to Major Approaches, How They Work, and When to Use Each One
by Michael Hartmann
- Price$11.49
- Reviews-
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Soil Science for Regenerative Agriculture: Build Living Soils, Boost Yields, and Heal Your Farm Ecosystem From the Ground Up
by Michael Hartmann
- Price$8.59
- Reviews-
-
Classical Mechanics Explained: An Intuitive, Math-Light Guide to Motion, Forces, and Energy for Curious Beginners
by Michael Hartmann
- Price$7.29
- Reviews-
- Published2026-08
-
Sand and Beaches for Beginners: A Simple Introduction to the Science of Coastlines
by Michael Hartmann
- Price$7.49
- Reviews-
-
Criminal Profiling Techniques: Inside the Minds of Offenders and the Science of Behavioral Evidence
by Michael Hartmann
- Price$6.39
- Reviews-
-
Number Theory: A Gentle Introduction to the Hidden Patterns and Logic of Integers
by Michael Hartmann
- Price$11.49
- Reviews-
-
Yeast for Beginners: A Simple Introduction to the Tiny Fungus Behind Bread and More
by Michael Hartmann
- Price$8.59
- Reviews-
-
Digital Forensics Explained: A Practical Beginner’s Guide to Investigating Computers, Phones, Networks, and the Cloud
by Michael Hartmann
- Price$8.59
- Reviews-
-
History of Amsterdam: 800 Years Built on Water and Trade
by Michael Hartmann
- Price$8.59
- Reviews-
-
Microscopes for Beginners: A Beginner's Guide to the Tools That Reveal the Invisible
by Michael Hartmann
- Price$7.29
- Reviews-
Main categories
FAQ
How many books does Michael Hartmann have on Amazon?
KDPTop tracks 13 of their books; 13 made an Amazon list in the last 30 days.
Which categories does Michael Hartmann publish in?
Their books chart most often in Solid-State Physics, Organic, Biochemistry.
How does Michael Hartmann price their books?
The median price is $8.59; half of the books cost $7.29–$8.59.
Has Michael Hartmann released new books recently?
13 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.