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Greg Caldwell: Amazon KDP author data
As of Nov 6, 2026, Greg Caldwell has 8 books on Amazon, 8 of them on a best-seller list in the last 30 days (best rank #1), mostly in Agile, Quality Control & Management, Quality Control.
| Median price | $10.71 |
|---|---|
| Price range (middle 50%) | $7.17 – $15.22 |
| Median reviews | 28 |
| Total reviews | 294 |
| 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 $10.71, 57% below the median of their main category, Agile.
Greg Caldwell's best-ranked books
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Lean Mastery: 8 Books in 1 – Master Lean Six Sigma & Build a Lean Enterprise, Accelerate Tasks with Scrum and Agile Project Management, Optimize with Kanban, and Adopt The Kaizen Mindset
by Greg Caldwell
- Price$8.99
- Rating4.4
- Reviews28
-
Lean Six Sigma: Simplified - How to Implement The Six Sigma Methodology to Improve Quality and Speed (Lean Guides with Scrum, Sprint, Kanban, DSDM, XP & Crystal Book 7)
by Greg Caldwell
- Price$3.99
- Rating4.5
- Reviews60
-
Lean Mastery: 8 Books in 1: Master Lean Six Sigma & Build a Lean Enterprise, Accelerate Tasks with Scrum and Agile Project Management, Optimize with Kanban, and Adopt the Kaizen Mindset
by Greg Caldwell
- Price$19.91
- Rating4.4
- Reviews28
- Published2020-07
-
Kaizen: How to Apply Lean Kaizen to Your Startup Business and Management to Improve Productivity, Communication, and Performance: Lean Guides with Scrum, Sprint, Kanban, DSDM, XP & Crystal, Book 2
by Greg Caldwell
- Price$8.23
- Rating3.7
- Reviews20
-
Lean Six Sigma: Simplified: How to Implement the Six Sigma Methodology to Improve Quality and Speed: Lean Guides with Scrum, Sprint, Kanban, DSDM, XP & Crystal, Book 7
by Greg Caldwell
- Price$12.42
- Rating4.5
- Reviews60
-
Agile Project Management: The Complete Guide for Beginners to Scrum, Agile Project Management, and Software Development (Lean Guides with Scrum, Sprint, Kanban, DSDM, XP & Crystal Book 6)
by Greg Caldwell
- Price$3.99
- Rating4.2
- Reviews19
-
Agile Project Management: The Complete Guide for Beginners to Scrum, Agile Project Management, and Software Development (Lean Guides with Scrum, Sprint, Kanban, DSDM, XP & Crystal)
by Greg Caldwell
- Price$14.97
- Rating4.2
- Reviews19
-
Lean Six Sigma: Simplified - How to Implement The Six Sigma Methodology to Improve Quality and Speed (Lean Guides with Scrum, Sprint, Kanban, DSDM, XP & Crystal)
by Greg Caldwell
- Price$15.97
- Rating4.5
- Reviews60
Main categories
FAQ
How many books does Greg Caldwell have on Amazon?
KDPTop tracks 8 of their books; 8 made an Amazon list in the last 30 days.
Which categories does Greg Caldwell publish in?
Their books chart most often in Agile, Quality Control & Management, Quality Control.
How does Greg Caldwell price their books?
The median price is $10.71; half of the books cost $7.17–$15.22.
Has Greg Caldwell 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.