KDP categories · Top KDP authors
Charles Liu: Amazon KDP author data
As of Nov 6, 2026, Charles Liu has 8 books on Amazon, 7 of them on a best-seller list in the last 30 days (best rank #11), mostly in Reference, Education, Science for Kids.
| Median price | $18.15 |
|---|---|
| Price range (middle 50%) | $14.84 – $24.46 |
| Median reviews | 32 |
| Total reviews | 375 |
| New listings (30 days, incl. new editions) | 2 |
| Breakout books (30 days) | 2 |
What stands out
- 88% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $18.15, 82% above the median of their main category, Reference.
Charles Liu's best-ranked books
-
The Handy Quantum Physics Answer Book (The Handy Answer Book Series)
by Charles Liu
- Price$14.39
- Rating4.6
- Reviews127
-
The Handy Quantum Physics Answer Book (The Handy Answer Book Series)
by Charles Liu
- Price$21.31
- Rating4.6
- Reviews127
- Published2024-07
-
The Handy Physics Answer Book (The Handy Answer Book Series)
by Charles Liu
- Price$14.99
- Rating4.4
- Reviews31
-
(Super) Natural Science: The Real Science of Superheroes, Mythic Creatures, and the (Sci-Fi) Universe
by Charles Liu
- Price$22.95
- Reviews-
- Published2026-10
-
(Super) Natural Science: The Real Science of Superheroes, Mythic Creatures, and the (Sci-Fi) Universe
by Charles Liu
- Price$11.99
- Reviews-
- Published2026-10
-
The Handy Astronomy Answer Book (The Handy Answer Book Series)
by Charles Liu
- Price$14.99
- Rating4.6
- Reviews33
-
The Handy Physics Answer Book (The Handy Answer Book Series)
by Charles Liu
- Price$28.99
- Rating4.4
- Reviews31
-
One Universe: At Home in the Cosmos
by Charles Liu
- Price$43.60
- Rating4.5
- Reviews26
- Published1999-12
Main categories
FAQ
How many books does Charles Liu have on Amazon?
KDPTop tracks 8 of their books; 7 made an Amazon list in the last 30 days.
Which categories does Charles Liu publish in?
Their books chart most often in Reference, Education, Science for Kids.
How does Charles Liu price their books?
The median price is $18.15; half of the books cost $14.84–$24.46.
Has Charles Liu 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.