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Grandpa Arnold: Amazon KDP author data
As of Nov 6, 2026, Grandpa Arnold has 65 books on Amazon, 19 of them on a best-seller list in the last 30 days (best rank #5), mostly in For the Aging, Physical Medicine & Rehabilitation, Podiatry.
| Median price | $4.99 |
|---|---|
| Price range (middle 50%) | $2.99 – $9.99 |
| Median reviews | 1 |
| Total reviews | 12 |
| New books (30 days) | 7 |
| Breakout books (30 days) | 3 |
What stands out
- Median price $4.99, 67% below the median of their main category, For the Aging.
- 7 new books in the last 30 days, 3 of them broke into a Best Sellers list.
Grandpa Arnold's best-ranked books
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Foot and Ankle Strengthening Exercises (Fully Illustrated Edition): Step-by-Step Photo Guide to Prevent Injuries and Enhance Performance
by Grandpa Arnold
- Price$9.99
- Reviews-
-
SPEED SQUARE GUIDE: How to Measure, Mark, and Cut Accurate Angles for Woodworking and Framing (Framing Tools Mastery Series Book 1)
by Grandpa Arnold
- Price$2.99
- Rating3.4
- Reviews3
-
STAIR GAUGES GUIDE: How to Use a Framing Square to Measure, Layout, and Cut Perfect Stringers for Safe and Code-Compliant Stairs (Framing Tools Mastery Series Book 2)
by Grandpa Arnold
- Price$2.99
- Reviews-
-
Foot and Ankle Strengthening Exercises (Fully Illustrated Edition): Step-by-Step Photo Guide to Prevent Injuries and Enhance Performance (Foot and Ankle Strengthening Exercises Collection Book 2)
by Grandpa Arnold
- Price$4.99
- Reviews-
-
Strong Feet for Life: A Step-by-Step Program to Manage Foot Pain, Improve Balance, Walk Better, and Protect Mobility After 40 (Foot and Ankle Strengthening Exercises Collection Book 3)
by Grandpa Arnold
- Price$2.99
- Rating3.0
- Reviews1
-
The Boring Business Blueprint: How Ordinary People Make Millions Selling Unglamorous Products Online
by Grandpa Arnold
- Price$2.99
- Reviews-
-
Foot and Ankle Strengthening Exercises: Prevent Injuries and Enhance Performance (Foot and Ankle Strengthening Exercises Collection Book 1)
by Grandpa Arnold
- Price$2.99
- Reviews-
-
Teach Your Baby to Sit: 5 Expert OT Activities for Faster, Stronger Sitting Skills
by Grandpa Arnold
- Price$2.99
- Reviews-
- Published2025-12
-
Shitsuke: What Japanese Parents Know That We Don’t?: 2nd Edition – Revised and Expanded (Japanese Parenting Series Book 1)
by Grandpa Arnold
- Price$2.99
- Rating3.5
- Reviews2
-
THE MARIANA TRENCH Life in the Ocean's Deepest Place: Discover the Bizarre Creatures, Extreme Pressure, and Hidden Mysteries of Challenger Deep for Curious Nature and Ocean Lovers
by Grandpa Arnold
- Price$4.99
- Reviews-
Main categories
FAQ
How many books does Grandpa Arnold have on Amazon?
KDPTop tracks 65 of their books; 19 made an Amazon list in the last 30 days.
Which categories does Grandpa Arnold publish in?
Their books chart most often in For the Aging, Physical Medicine & Rehabilitation, Podiatry.
How does Grandpa Arnold price their books?
The median price is $4.99; half of the books cost $2.99–$9.99.
Has Grandpa Arnold released new books recently?
7 new books in the last 30 days, 3 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.