KDP categories · Top KDP authors
Functional Analysis (Pure Mathematics, Books): Amazon KDP category data
Amazon Books Best Sellers data for Functional Analysis (Pure Mathematics, Books), updated Nov 3, 2026: median price $59.98, median 8 reviews, average rating 4.5 and a KDPTop opportunity score of 28/100 (highly competitive).
| Price range (middle 50%) | $20.99 – $80.55 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 3% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 1% of the parent category Pure Mathematics (743), one of the easier corners under it.
- At $59.98 its median price beats 97% of Books categories, leaving more margin per copy.
- Only 3% of its best sellers are under 90 days old, fewer than in 88% of Books categories: established titles hold the list.
Top 10 Functional Analysis best sellers
-
Introductory Functional Analysis with Applications
by Erwin Kreyszig
- List rank#1
- Price$96.28
- Rating4.6
- Reviews179
-
Introduction to Analysis (Dover Books on Mathematics)
by Maxwell Rosenlicht
- List rank#2
- Price$18.59
- Rating4.3
- Reviews119
-
A Course in Functional Analysis (Graduate Texts in Mathematics, 96)
by John B Conway
- List rank#3
- Price$42.25
- Rating4.5
- Reviews56
-
Elements of the Theory of Functions (Dover Books on Mathematics)
by Konrad Knopp
- List rank#4
- Price$8.76
- Rating4.7
- Reviews13
-
Handbook of Mathematical Functions: with Formulas, Graphs, and Mathematical Tables (Dover Books on Mathematics)
by Milton Abramowitz
- List rank#5
- Price$62.73
- Rating4.6
- Reviews160
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![Elements of the Theory of Functions and Functional Analysis [Two Volumes in One] book cover by A. N. Kolmogorov](https://images-na.ssl-images-amazon.com/images/I/61ESMC5g8+L._AC_UL300_SR300,200_.jpg)
Elements of the Theory of Functions and Functional Analysis [Two Volumes in One]
by A. N. Kolmogorov
- List rank#6
- Price$9.51
- Rating4.7
- Reviews231
-
Functional Analysis (Dover Books on Mathematics)
by George Bachman
- List rank#7
- Price$24.95
- Rating4.7
- Reviews51
-
Quantum Mechanics Done Right: The Shortest Path from Novice to Researcher
by James K. Freericks
- List rank#8
- Price$59.98
- Rating5.0
- Reviews3
-
A First Course in Functional Analysis (Dover Books on Mathematics)
by Prof. Martin Davis
- List rank#9
- Price$10.03
- Rating5.0
- Reviews6
-
Mosquito: The Story of Man’s Deadliest Foe
by Michael D'Antonio
- List rank#10
- Price$14.95
- Rating4.3
- Reviews128
Same niche in Kindle eBooks: Functional Analysis
FAQ
Is Functional Analysis a good niche for Amazon KDP?
Its KDPTop opportunity score is 28/100, which makes it highly competitive. The median best seller has 8 reviews and sells for $59.98.
How many reviews do you need to rank in Functional Analysis?
The median best seller has 8 reviews, and 89% of them have fewer than 100.
What do Functional Analysis best sellers cost?
The median price is $59.98; half of the best sellers are priced between $20.99 and $80.55.
Can new books break into Functional Analysis?
3% of the current best sellers were released in the last 90 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.