KDP categories · Top KDP authors
Bill Shipley: Amazon KDP author data
As of Nov 6, 2026, Bill Shipley has 3 books on Amazon, 3 of them on a best-seller list in the last 30 days (best rank #11), mostly in Ecology, Biostatistics, Research.
| Median price | $46.54 |
|---|---|
| Price range (middle 50%) | $42.44 – $47.77 |
| Median reviews | 1 |
| Total reviews | 1 |
| New books (30 days) | 2 |
| Breakout books (30 days) | 2 |
What stands out
- Median price $46.54, 27% below the median of their main category, Ecology.
Bill Shipley's best-ranked books
-
Cause and Correlation in Biology: A User's Guide to Path Analysis, Structural Equations and Causal Inference with R
by Bill Shipley
- Price$46.54
- Reviews-
-
Cause and Correlation in Biology
by Bill Shipley
- Price$48.99
- Reviews-
-
Ordination methods for biologists: a non-mathematical introduction using R
by Bill Shipley
- Price$38.34
- Rating5.0
- Reviews1
Main categories
FAQ
How many books does Bill Shipley have on Amazon?
KDPTop tracks 3 of their books; 3 made an Amazon list in the last 30 days.
Which categories does Bill Shipley publish in?
Their books chart most often in Ecology, Biostatistics, Research.
How does Bill Shipley price their books?
The median price is $46.54; half of the books cost $42.44–$47.77.
Has Bill Shipley 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.