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Mark Ryan: Amazon KDP author data
Mark Ryan has 15 books on Amazon, 15 of them on a best-seller list in the last 30 days (best rank #1), mostly in Mathematics, Geometry, Calculus.
15Books on Amazon
15Listed in 30 days
4.5Average rating
| Median price | $14.89 |
|---|---|
| Price range (middle 50%) | $10.24 – $17.28 |
| Median reviews | 308 |
| Total reviews | 8,050 |
| New books (30 days) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- 100% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $14.89, 17% above the median of their main category, Mathematics.
Mark Ryan's best-ranked books
-
Geometry For Dummies
by Mark Ryan
- Price$11.48
- Rating4.5
- Reviews1,019
-
Geometry Workbook For Dummies
by Mark Ryan
- Price$10
- Rating4.3
- Reviews20
-
Geometry For Dummies
by Mark Ryan
- Price$15
- Rating4.5
- Reviews1,019
-
Geometry Workbook For Dummies (For Dummies: Learning Made Easy)
by Mark Ryan
- Price$19.51
- Rating4.3
- Reviews20
-
Calculus For Dummies (For Dummies (Lifestyle))
by Mark Ryan
- Price$10.48
- Rating4.5
- Reviews1,891
-
Calculus All-in-One For Dummies (+ Chapter Quizzes Online)
by Mark Ryan
- Price$21.07
- Rating4.6
- Reviews78
-
Calculus For Dummies (For Dummies (Lifestyle))
by Mark Ryan
- Price$14
- Rating4.5
- Reviews1,891
-
Calculus Workbook For Dummies with Online Practice
by Mark Ryan
- Price$14.89
- Rating4.6
- Reviews392
-
Geometry Essentials For Dummies
by Mark Ryan
- Price$8.20
- Rating4.6
- Reviews200
-
Geometry Essentials For Dummies
by Mark Ryan
- Price$7
- Rating4.6
- Reviews200
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.