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Roberts D Duffield: Amazon KDP author data
As of Nov 6, 2026, Roberts D Duffield has 18 books on Amazon, 8 of them on a best-seller list in the last 30 days (best rank #25), mostly in Atlases & Maps, Travel Maps, Reference.
| Median price | $22.99 |
|---|---|
| Price range (middle 50%) | $22.99 – $24.99 |
| Median reviews | 1 |
| Total reviews | 7 |
| New listings (30 days, incl. new editions) | 8 |
| Breakout books (30 days) | 4 |
What stands out
- Median price $22.99, 109% above the median of their main category, Atlases & Maps.
- 8 new listings in the last 30 days (new editions included), 4 of them broke into a Best Sellers list.
Roberts D Duffield's best-ranked books
-
New Zealand Road Atlas 2026-2027 Large Print: The National Navigation Edition of New Zealand’s Regions, Motorways, Connecting Roads and Planning Tips.
by Roberts D Duffield
- Price$21.99
- Reviews-
- Published2026-10
-
Iceland Road Atlas 2026 2027 Large Print: Detailed Highway Routes, Scenic Detours, Remote Roads and Practical Planning for Iceland Adventures.
by Roberts D Duffield
- Price$22.99
- Reviews-
-
Germany Road Atlas 2026: Explore Germany by Road with Detailed Road Maps, Motorways, Cities, Towns and Essential Travel Information.
by Roberts D Duffield
- Price$22.99
- Rating1.0
- Reviews1
-
United States Road Atlas 2026 For Seniors: Large-Print Maps, Simple Navigation, Motorways, Scenic Routes and Practical Travel Planning Across All States of America.
by Roberts D Duffield
- Price$22.99
- Reviews-
-
Greece Road Atlas 2026: Explore Greece by Road with Detailed Road Maps, Highways, Cities, Islands, Tourist Routes and Travel Planning Tips.
by Roberts D Duffield
- Price$22.99
- Rating2.5
- Reviews3
- Published2026-09
-
Deutschland Straßenatlas 2026: Erkunden Sie Deutschland auf dem Landweg mit detaillierten Straßenkarten, Autobahnen, Städten, Ortschaften und wichtigen Reiseinformationen. (German Edition)
by Roberts D Duffield
- Price$30.25
- Rating1.0
- Reviews1
- Published2026-09
-
Italy Road Atlas 2026: Explore Italy by Road with Detailed Road Maps, Motorways, Cities, Tourist Routes and Travel Tips.
by Roberts D Duffield
- Price$22.99
- Rating1.0
- Reviews1
-
Switzerland Road Atlas 2026-2027 Large Print: A Practical Map Companion to Switzerland’s Cantons, Motorways, Highways, Alpine Passes, Towns and Cross-Country Routes.
by Roberts D Duffield
- Price$24.99
- Rating1.0
- Reviews1
-
France Road Atlas 2026-2027 Large Print: A Clear Guide to France’s Regions, Motorways, Towns, Cities Connecting Roads and Planning Tips.
by Roberts D Duffield
- Price$22.99
- Reviews-
-
Italienischer Straßenatlas 2026: Erkunden Sie Italien auf dem Landweg mit detaillierten Straßenkarten, Autobahnen, Städten, Touristenrouten und Reisetipps. (German Edition)
by Roberts D Duffield
- Price$28
- Reviews-
- Published2026-09
Main categories
FAQ
How many books does Roberts D Duffield have on Amazon?
KDPTop tracks 18 of their books; 8 made an Amazon list in the last 30 days.
Which categories does Roberts D Duffield publish in?
Their books chart most often in Atlases & Maps, Travel Maps, Reference.
How does Roberts D Duffield price their books?
The median price is $22.99; half of the books cost $22.99–$24.99.
Has Roberts D Duffield released new books recently?
8 new books in the last 30 days, 4 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.