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David Khan: Amazon KDP author data
As of Nov 6, 2026, David Khan has 5 books on Amazon, 2 of them on a best-seller list in the last 30 days (best rank #2), mostly in Studying & Workbooks, Pure Mathematics, College & High School.
| Median price | $21.99 |
|---|---|
| Price range (middle 50%) | $21.41 – $21.99 |
| Median reviews | 74 |
| Total reviews | 227 |
| New listings (30 days, incl. new editions) | 2 |
| Breakout books (30 days) | 2 |
What stands out
- Median price $21.99, 178% above the median of their main category, Studying & Workbooks.
David Khan's best-ranked books
-
Princeton Review AP Calculus AB Premium Prep, 13th Edition: 8 Practice Tests + Digital Practice Online + Content Review (College Test Preparation)
by David Khan
- Price$21.41
- Rating5.0
- Reviews1
- Published2026-08
-
Princeton Review AP Calculus BC Premium Prep, 13th Edition: 5 Practice Tests + Digital Practice Online + Content Review (College Test Preparation)
by David Khan
- Price$20.87
- Rating4.7
- Reviews4
- Published2026-08
-
Princeton Review AP Calculus BC Prep, 10th Edition: 5 Practice Tests + Complete Content Review + Strategies & Techniques (2024) (College Test Preparation)
by David Khan
- Price$21.99
- Rating4.3
- Reviews74
- Published2023-08
-
Princeton Review AP Calculus AB Prep, 10th Edition: 5 Practice Tests + Complete Content Review + Strategies & Techniques (2024) (College Test Preparation)
by David Khan
- Price$21.99
- Rating4.3
- Reviews74
- Published2023-08
-
Princeton Review AP Calculus AB Premium Prep, 10th Edition: 8 Practice Tests + Complete Content Review + Strategies & Techniques (2024) (College Test Preparation)
by David Khan
- Price$27.99
- Rating4.7
- Reviews74
- Published2023-08
Main categories
FAQ
How many books does David Khan have on Amazon?
KDPTop tracks 5 of their books; 2 made an Amazon list in the last 30 days.
Which categories does David Khan publish in?
Their books chart most often in Studying & Workbooks, Pure Mathematics, College & High School.
How does David Khan price their books?
The median price is $21.99; half of the books cost $21.41–$21.99.
Has David Khan 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.