KDP categories · Top KDP authors
EFFICIENT SAUL: Amazon KDP author data
As of Nov 6, 2026, EFFICIENT SAUL has 32 books on Amazon, 32 of them on a best-seller list in the last 30 days (best rank #3), mostly in Engineering, Software, Hardware.
| Median price | $13.75 |
|---|---|
| Price range (middle 50%) | $4.99 – $13.99 |
| Median reviews | 3 |
| Total reviews | 44 |
| 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.
EFFICIENT SAUL's best-ranked books
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Computer Engineering for Babies (Tiny Thinkers Academy): A Friendly First Look at Designing Smart Machines (Tiny Thinkers Academy - STEM for Babies)
by EFFICIENT SAUL
- Price$4.99
- Rating4.0
- Reviews4
- Published2025-09
-
Cloud Computing for Babies (Tiny Thinkers Academy): A Friendly First Look at Storing and Sharing Information (Tiny Thinkers Academy - STEM for Babies)
by EFFICIENT SAUL
- Price$4.99
- Reviews-
-
Data Science for Babies (Tiny Thinker Academy): A Friendly First Look at Numbers, Patterns, and Predictions (Tiny Thinkers Academy - STEM for Babies)
by EFFICIENT SAUL
- Price$12.68
- Rating5.0
- Reviews2
-
Computer Engineering for Babies (Tiny Thinkers Academy): A Friendly First Look at Designing Smart Machines (Tiny Thinkers Academy - STEM for Babies)
by EFFICIENT SAUL
- Price$13.99
- Rating4.0
- Reviews4
-
Data Science for Babies (Tiny Thinker Academy): A Friendly First Look at Numbers, Patterns, and Predictions (Tiny Thinkers Academy - STEM for Babies)
by EFFICIENT SAUL
- Price$4.99
- Rating5.0
- Reviews2
-
Machine Learning for Babies (Tiny Thinker Academy): A Friendly First Look at How Computers Learn (Tiny Thinkers Academy - STEM for Babies)
by EFFICIENT SAUL
- Price$13.99
- Reviews-
-
Mechanical Engineering for Babies (Tiny Thinkers Academy): A Friendly First Look at Machines and Motion (Tiny Thinkers Academy - STEM for Babies)
by EFFICIENT SAUL
- Price$13.99
- Rating3.7
- Reviews4
-
Statistics for Babies (Tiny Thinkers Academy): A Friendly First Look at Chance, Patterns, and Averages (Tiny Thinkers Academy - STEM for Babies)
by EFFICIENT SAUL
- Price$13.99
- Rating3.7
- Reviews5
-
Network Engineering for Babies (Tiny Thinkers Academy): A Friendly First Look at Building Computer Connections (Tiny Thinkers Academy - STEM for Babies)
by EFFICIENT SAUL
- Price$13.99
- Reviews-
-
Electrical Engineering for Babies: A Friendly First Look at Circuits and Power (Tiny Thinkers Academy - STEM for Babies)
by EFFICIENT SAUL
- Price$13.99
- Rating3.9
- Reviews3
- Published2026-02
Main categories
FAQ
How many books does EFFICIENT SAUL have on Amazon?
KDPTop tracks 32 of their books; 32 made an Amazon list in the last 30 days.
Which categories does EFFICIENT SAUL publish in?
Their books chart most often in Engineering, Software, Hardware.
How does EFFICIENT SAUL price their books?
The median price is $13.75; half of the books cost $4.99–$13.99.
Has EFFICIENT SAUL 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.