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Jake Fernsby: Amazon KDP author data
As of Nov 6, 2026, Jake Fernsby has 2 books on Amazon, 2 of them on a best-seller list in the last 30 days (best rank #19), mostly in Pure Mathematics, Discrete Mathematics, Mathematics.
| Median price | $22.02 |
|---|---|
| Price range (middle 50%) | $20.79 – $23.26 |
| Median reviews | 1 |
| Total reviews | 2 |
| New listings (30 days, incl. new editions) | 2 |
| Breakout books (30 days) | 2 |
What stands out
- Median price $22.02, 58% above the median of their main category, Pure Mathematics.
Jake Fernsby's best-ranked books
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THE VISUAL CATEGORY THEORY WORKBOOK: A Step-by-Step Guide to Objects, Arrows, Functors, Natural Transformations, Universal Properties, Adjunctions, Monads, and Applications
by Jake Fernsby
- Price$19.55
- Rating3.0
- Reviews1
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THE VISUAL DISCRETE MATH WORKBOOK: A Step-by-Step Guide to Logic, Proofs, Sets, Functions, Counting, Relations, Recursion, Graphs, Algorithms, and Computer Science Applications
by Jake Fernsby
- Price$24.50
- Rating5.0
- Reviews1
Main categories
FAQ
How many books does Jake Fernsby have on Amazon?
KDPTop tracks 2 of their books; 2 made an Amazon list in the last 30 days.
Which categories does Jake Fernsby publish in?
Their books chart most often in Pure Mathematics, Discrete Mathematics, Mathematics.
How does Jake Fernsby price their books?
The median price is $22.02; half of the books cost $20.79–$23.26.
Has Jake Fernsby released new books recently?
2 new books in the last 30 days, 2 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.