KDP categories · Top KDP authors
Colson Ridge: Amazon KDP author data
As of Nov 6, 2026, Colson Ridge has 7 books on Amazon, 6 of them on a best-seller list in the last 30 days (best rank #4), mostly in Cardiology, Assessment & Diagnosis, Instruments & Supplies.
| Median price | $9.99 |
|---|---|
| Price range (middle 50%) | $7.99 – $9.99 |
| Median reviews | 33 |
| Total reviews | 221 |
| New books (30 days) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- 86% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
- Median price $9.99, 85% below the median of their main category, Cardiology.
Colson Ridge's best-ranked books
-
ECG | EKG Interpretation for Nurses: A Visual, Step-by-Step Guide with Clinical Illustrations and Case Studies
by Colson Ridge
- Price$7.99
- Rating4.6
- Reviews33
-
CPHQ Exam Study Guide: Ace your Certified Professional in Healthcare Quality License at First Time! Q&A | Tests | Extra Content
by Colson Ridge
- Price$9.99
- Rating3.3
- Reviews43
-
ECG | EKG Interpretation for Nurses: A Visual, Step-by-Step Guide with Clinical Illustrations and Case Studies
by Colson Ridge
- Price$21.99
- Rating4.6
- Reviews33
-
OCN Study Guide: Exam-Style Q&A, Clinical Scenarios & Study Tools for Oncology Nursing Certification Prep
by Colson Ridge
- Price$7.99
- Rating4.6
- Reviews44
-
OCN Study Guide: Your Path to Oncology Nursing Certification! Q&A | Tests | Extra Content
by Colson Ridge
- Price-
- Rating4.6
- Reviews44
-
The Complete ABG Interpretation for Nurses: Your Toolkit to Interpret Arterial Blood Gases | Includes Extra Content (Resources for Nursing)
by Colson Ridge
- Price$9.99
- Rating4.6
- Reviews11
-
NHA Phlebotomy Exam Workbook: Online Platform, Q&As and Extra Content. Ace Your Certified Phlebotomy Technician Test!
by Colson Ridge
- Price-
- Rating3.8
- Reviews13
- Published2025-07
Main categories
FAQ
How many books does Colson Ridge have on Amazon?
KDPTop tracks 7 of their books; 6 made an Amazon list in the last 30 days.
Which categories does Colson Ridge publish in?
Their books chart most often in Cardiology, Assessment & Diagnosis, Instruments & Supplies.
How does Colson Ridge price their books?
The median price is $9.99; half of the books cost $7.99–$9.99.
Has Colson Ridge released new books recently?
0 new books in the last 30 days.
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.