KDP categories · Top KDP authors
Oliver Ryan R D: Amazon KDP author data
As of Nov 6, 2026, Oliver Ryan R D has 18 books on Amazon, 8 of them on a best-seller list in the last 30 days (best rank #25), mostly in Mechanical, Scientific Instruments, Experiments, Instruments & Measurement.
| Median price | $10.99 |
|---|---|
| Price range (middle 50%) | $5.99 – $11.99 |
| Median reviews | 1 |
| Total reviews | 3 |
| New books (30 days) | 8 |
| Breakout books (30 days) | 5 |
What stands out
- Median price $10.99, 43% below the median of their main category, Mechanical.
- 8 new books in the last 30 days, 5 of them broke into a Best Sellers list.
Oliver Ryan R D's best-ranked books
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How Car Mechanics Work for Beginners: An Illustrated Step-by-Step Guide to Automotive Systems, Vehicle Components, Maintenance, Troubleshooting and Basic Repair
by Oliver Ryan R D
- Price$10.80
- Rating5.0
- Reviews1
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How Car Mechanics Work for Beginners: An Illustrated Step-by-Step Guide to Automotive Systems, Vehicle Components, Maintenance, Troubleshooting and Basic Repair
by Oliver Ryan R D
- Price$5.80
- Rating5.0
- Reviews1
-
Learn About How Excavators Really Work: A Practical Illustrated Guide to Hydraulics, Components, Controls, Attachments, Maintenance, and Heavy Equipment Technology
by Oliver Ryan R D
- Price$10.99
- Reviews-
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250 EXCITING EXCAVATOR FUN FACTS FOR KIDS: Amazing Machines, Powerful Parts, Incredible Jobs & Cool Engineering Wonders for Curious Young Readers
by Oliver Ryan R D
- Price$12.99
- Reviews-
-
How a Mechanical Typewriter Works: An Illustrated Guide to the Mechanisms That Turn a Keystroke into Words
by Oliver Ryan R D
- Price$5.40
- Reviews-
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Money Management for Seniors After 50: A Practical Guide to Budgeting, Growing Your Savings, Protecting Your Retirement, Eliminating Debt, Avoiding Scams, and Achieving Financial Peace
by Oliver Ryan R D
- Price$11.99
- Rating4.0
- Reviews1
- Published2026-06
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Building Autonomous AI Agents Complete Guide for Beginners 2026: Learn How to Design, Build, Deploy, and Manage Intelligent AI Agents for Automation ... (The Autonomous AI Mastery Series)
by Oliver Ryan R D
- Price-
- Reviews-
- Published2026-06
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How a Jet Airliner Works: The Complete Guide to Airframes, Wings, Engines, Flight Controls, Fuel Systems, Cabin Technology, Safety Systems, and More
by Oliver Ryan R D
- Price$3.99
- Reviews-
-
Agentic AI Programming Complete Guide for Beginners 2026: Learn How to Build Goal-Driven AI Systems, Create Intelligent Workflows, Program Autonomous Agents and Automate Real-World Tasks
by Oliver Ryan R D
- Price-
- Reviews-
- Published2026-06
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Learn About How Excavators Really Work: A Practical Illustrated Guide to Hydraulics, Components, Controls, Attachments, Maintenance, and Heavy Equipment Technology
by Oliver Ryan R D
- Price$5.99
- Reviews-
Main categories
FAQ
How many books does Oliver Ryan R D have on Amazon?
KDPTop tracks 18 of their books; 8 made an Amazon list in the last 30 days.
Which categories does Oliver Ryan R D publish in?
Their books chart most often in Mechanical, Scientific Instruments, Experiments, Instruments & Measurement.
How does Oliver Ryan R D price their books?
The median price is $10.99; half of the books cost $5.99–$11.99.
Has Oliver Ryan R D released new books recently?
8 new books in the last 30 days, 5 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.