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Rene Fester Kratz: Amazon KDP author data
As of Nov 7, 2026, Rene Fester Kratz has 11 books on Amazon, 10 of them on a best-seller list in the last 30 days (best rank #1), mostly in Biology & Life Sciences, Biology, Ecology.
| Median price | $17.49 |
|---|---|
| Price range (middle 50%) | $15 – $19.62 |
| Median reviews | 88 |
| Total reviews | 2,011 |
| New listings (30 days, incl. new editions) | 3 |
| Breakout books (30 days) | 0 |
What stands out
- 91% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $17.49, 30% below the median of their main category, Biology & Life Sciences.
- 3 new listings in the last 30 days (new editions included).
Rene Fester Kratz's best-ranked books
-
Genetics For Dummies
by Rene Fester Kratz
- Price$20.76
- Rating4.5
- Reviews88
-
Biology For Dummies (For Dummies (Lifestyle))
by Rene Fester Kratz
- Price$13.62
- Rating4.6
- Reviews1,000
-
Genetics For Dummies
by Rene Fester Kratz
- Price$15
- Rating4.5
- Reviews88
-
Molecular & Cell Biology For Dummies, 2nd Edition
by Rene Fester Kratz
- Price$17.78
- Rating4.6
- Reviews351
-
Biology Workbook For Dummies
by Rene Fester Kratz
- Price$17.49
- Rating4.5
- Reviews30
-
Botany For Dummies
by Rene Fester Kratz
- Price$15
- Rating4.2
- Reviews21
-
Biology Essentials For Dummies
by Rene Fester Kratz
- Price$8.79
- Rating4.6
- Reviews520
-
Botany For Dummies
by Rene Fester Kratz
- Price$21.17
- Rating4.2
- Reviews21
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Main categories
FAQ
How many books does Rene Fester Kratz have on Amazon?
KDPTop tracks 11 of their books; 10 made an Amazon list in the last 30 days.
Which categories does Rene Fester Kratz publish in?
Their books chart most often in Biology & Life Sciences, Biology, Ecology.
How does Rene Fester Kratz price their books?
The median price is $17.49; half of the books cost $15–$19.62.
Has Rene Fester Kratz released new books recently?
3 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.