KDP categories · Top KDP authors
Alanna Collen: Amazon KDP author data
As of Nov 6, 2026, Alanna Collen has 6 books on Amazon, 6 of them on a best-seller list in the last 30 days (best rank #13), mostly in Genetics, Reference, Molecular Biology.
| Median price | $17.05 |
|---|---|
| Price range (middle 50%) | $12.99 – $18.39 |
| Median reviews | 1,222 |
| Total reviews | 7,777 |
| New books (30 days) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- 100% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
Alanna Collen's best-ranked books
-
10% Human: How Your Body's Microbes Hold the Key to Health and Happiness
by Alanna Collen
- Price$12.99
- Rating4.6
- Reviews2,127
- Published2015-05
-
10% Human: How Your Body's Microbes Hold the Key to Health and Happiness
by Alanna Collen
- Price$17.05
- Rating4.7
- Reviews318
-
10% Human: How Your Body's Microbes Hold the Key to Health and Happiness
by Alanna Collen
- Price$22.45
- Rating4.7
- Reviews318
-
10% Human: How Your Body’s Microbes Hold the Key to Health and Happiness
by Alanna Collen
- Price-
- Rating4.6
- Reviews2,127
-
10% Humano: Como os micro-organismos são a chave para a saúde do corpo e da mente (Portuguese Edition)
by Alanna Collen
- Price$7.55
- Rating4.8
- Reviews2,569
-
10% Human: How Your Body's Microbes Hold the Key to Health and Happiness
by Alanna Collen
- Price$18.39
- Rating4.7
- Reviews318
Main categories
FAQ
How many books does Alanna Collen have on Amazon?
KDPTop tracks 6 of their books; 6 made an Amazon list in the last 30 days.
Which categories does Alanna Collen publish in?
Their books chart most often in Genetics, Reference, Molecular Biology.
How does Alanna Collen price their books?
The median price is $17.05; half of the books cost $12.99–$18.39.
Has Alanna Collen 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.