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Chris Ferrie: Amazon KDP author data
Chris Ferrie has 102 books on Amazon, 82 of them on a best-seller list in the last 30 days (best rank #1), mostly in Physics, Astronomy & Space, Astronomy.
102Books on Amazon
82Listed in 30 days
4.7Average rating
| Median price | $6.44 |
|---|---|
| Price range (middle 50%) | $4.99 – $8.99 |
| Median reviews | 529 |
| Total reviews | 82,595 |
| New books (30 days) | 4 |
| Breakout books (30 days) | 2 |
What stands out
- 80% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $6.44, 17% above the median of their main category, Physics.
- 4 new books in the last 30 days, 2 of them broke into a Best Sellers list.
Chris Ferrie's best-ranked books
-
Baby University Board Book Set: A Science for Toddlers (Gifts for Kids)
by Chris Ferrie
- Price$29.73
- Rating4.7
- Reviews7,214
- Published2017-11
-
Artificial Intelligence for Babies (Baby University)
by Chris Ferrie
- Price$6.46
- Rating4.6
- Reviews252
-
Baby University ABC's Board Book Set: A Scientific Alphabet for Toddlers 1-3
by Chris Ferrie
- Price$27.95
- Rating4.8
- Reviews3,133
-
Organic Chemistry for Babies: A STEM Learning Book for Babies from the #1 Science Author for Kids (Gifts for Toddlers, Teachers, and Med School Students) (Baby University)
by Chris Ferrie
- Price$7.13
- Rating4.8
- Reviews1,555
-
Baby University 4-Book Physics Set: Explore Astrophysics, Nuclear Physics and More with this Ultimate STEM Gift for Kids
by Chris Ferrie
- Price$30.86
- Rating4.8
- Reviews1,451
-
Quantum Computing for Babies: A Programming and Coding Math Book for Little Ones and Math Lovers from the #1 Science Author for Kids (STEM Gift for Kids) (Baby University 0)
by Chris Ferrie
- Price$4.99
- Rating4.6
- Reviews529
-
8 Little Planets: A Solar System Book for Kids with Unique Planet Cutouts
by Chris Ferrie
- Price$5.96
- Rating4.8
- Reviews11,140
-
Baby University Quantum Science Board Book Set: STEM Board for Toddlers
by Chris Ferrie
- Price$36.06
- Rating4.8
- Reviews657
-
Blockchain for Babies: An Introduction to the Technology Behind Bitcoin from the #1 Science Author for Kids (STEM and Science Gifts for Kids) (Baby University)
by Chris Ferrie
- Price$9.31
- Rating4.4
- Reviews395
-
ABCs of Artificial Intelligence (Baby University)
by Chris Ferrie
- Price$7.82
- Rating4.7
- Reviews48
Main categories
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.