KDP categories · Top KDP authors
Crystal J. Richards: Amazon KDP author data
As of Nov 6, 2026, Crystal J. Richards has 3 books on Amazon, 3 of them on a best-seller list in the last 30 days (best rank #7), mostly in PMP Exam, Graduate & Professional, Studying & Workbooks.
| Median price | $25 |
|---|---|
| Price range (middle 50%) | $24.02 – $32.50 |
| Median reviews | 3 |
| Total reviews | 34 |
| New listings (30 days, incl. new editions) | 1 |
| Breakout books (30 days) | 1 |
What stands out
- Median price $25, 24% below the median of their main category, PMP Exam.
Crystal J. Richards's best-ranked books
-
PMP Exam Prep For Dummies
by Crystal J. Richards
- Price$23.04
- Rating5.0
- Reviews3
-
PMP Exam Prep For Dummies
by Crystal J. Richards
- Price$25
- Rating5.0
- Reviews3
-
PMP Exam Prep For Dummies
by Crystal J. Richards
- Price$39.99
- Rating4.4
- Reviews28
Main categories
FAQ
How many books does Crystal J. Richards have on Amazon?
KDPTop tracks 3 of their books; 3 made an Amazon list in the last 30 days.
Which categories does Crystal J. Richards publish in?
Their books chart most often in PMP Exam, Graduate & Professional, Studying & Workbooks.
How does Crystal J. Richards price their books?
The median price is $25; half of the books cost $24.02–$32.50.
Has Crystal J. Richards released new books recently?
1 new book 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.