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Christophe Galfard: Amazon KDP author data
As of Nov 6, 2026, Christophe Galfard has 6 books on Amazon, 6 of them on a best-seller list in the last 30 days (best rank #14), mostly in Cosmology, Astronomy & Space Science, Evolution.
| Median price | $14.99 |
|---|---|
| Price range (middle 50%) | $11.74 – $19.21 |
| Median reviews | 1,191 |
| Total reviews | 2,897 |
| New books (30 days) | 2 |
| Breakout books (30 days) | 1 |
What stands out
- 100% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
Christophe Galfard's best-ranked books
-
The Universe in Your Hand: A Journey Through Space, Time, and Beyond
by Christophe Galfard
- Price$2.99
- Rating4.5
- Reviews1,191
-
This Is Life: A Journey from Inside Your Body to Beyond Earth
by Christophe Galfard
- Price$13.99
- Reviews-
- Published2026-09
-
L'Univers à portée de main (French Edition)
by Christophe Galfard
- Price$10.99
- Rating4.7
- Reviews1,617
-
This Is Life: A Journey from Inside Your Body to Beyond Earth
by Christophe Galfard
- Price$20.29
- Reviews-
-
La Vie à portée de main (French Edition)
by Christophe Galfard
- Price$15.99
- Rating4.6
- Reviews89
-
This Is Life: A Journey from Inside Your Body to Beyond Earth
by Christophe Galfard
- Price$27.92
- Reviews-
Main categories
FAQ
How many books does Christophe Galfard have on Amazon?
KDPTop tracks 6 of their books; 6 made an Amazon list in the last 30 days.
Which categories does Christophe Galfard publish in?
Their books chart most often in Cosmology, Astronomy & Space Science, Evolution.
How does Christophe Galfard price their books?
The median price is $14.99; half of the books cost $11.74–$19.21.
Has Christophe Galfard released new books recently?
2 new books in the last 30 days, 1 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.