KDP categories · Top KDP authors
Gary Alan Koretzky: Amazon KDP author data
As of Nov 6, 2026, Gary Alan Koretzky has 2 books on Amazon, 2 of them on a best-seller list in the last 30 days (best rank #2), mostly in Endocrine System, Basic Science, Immunology.
| Median price | $37 |
|---|---|
| Price range (middle 50%) | $36.52 – $37.48 |
| Median reviews | - |
| Total reviews | 0 |
| New books (30 days) | 2 |
| Breakout books (30 days) | 2 |
What stands out
- Median price $37, 127% above the median of their main category, Endocrine System.
Gary Alan Koretzky's best-ranked books
-
Your Immune System: The Amazing Science of Who You Are
by Gary Alan Koretzky
- Price$37.95
- Reviews-
-
Your Immune System: The Amazing Science of Who You Are
by Gary Alan Koretzky
- Price$36.05
- Reviews-
- Published2026-10
Main categories
FAQ
How many books does Gary Alan Koretzky have on Amazon?
KDPTop tracks 2 of their books; 2 made an Amazon list in the last 30 days.
Which categories does Gary Alan Koretzky publish in?
Their books chart most often in Endocrine System, Basic Science, Immunology.
How does Gary Alan Koretzky price their books?
The median price is $37; half of the books cost $36.52–$37.48.
Has Gary Alan Koretzky released new books recently?
2 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.