KDP categories · Top KDP authors
XSL: Amazon KDP category data
Amazon Books Best Sellers data for XSL, updated Nov 2, 2026: median price $39.30, median 6 reviews, average rating 4.0 and a KDPTop opportunity score of 24/100 (highly competitive).
| Price range (middle 50%) | $28.16 – $51.87 |
|---|---|
| Average rating | 4.0 |
| New releases (90 days) | 0% |
| Books on the list | 35 |
| Store | Books |
What stands out
- Its median reviews are 2% of the parent category Programming Languages (297), one of the easier corners under it.
- Only 0% of its best sellers are under 90 days old, fewer than in 99% of Books categories: established titles hold the list.
- Its review barrier is lower than in 88% of Books categories: the median best seller has only 6 reviews, so new books can chart with few.
Top 10 XSL best sellers
-
Xml Json Programming, In 8 Hours, For Beginners, Learn Coding Fast: Xml Json Language, Crash Course Textbook & Exercises
by Ray Yao
- List rank#1
- Price$13.99
- Rating4.6
- Reviews6
-
Learn XSL and XSLT: The Complete Beginner's Guide to Transforming XML Data and Creating Dynamic Documents
by Thomas Greene
- List rank#2
- Price$3.99
- Rating5.0
- Reviews1
-
Xml Json Programming, In 8 Hours, For Beginners, Learn Coding Easily: Xml Json Scripting, Crash Course Textbook & Exercises (2nd Edition) (Textbooks in 8 Hours 18)
by Ray Yao
- List rank#3
- Price$2.99
- Rating5.0
- Reviews1
-
FileMaker Pro Design and Scripting For Dummies
by Timothy Trimble
- List rank#4
- Price$21
- Rating3.6
- Reviews56
-
XML & XSL Fast Start 2nd Edition: Your Quick Start Guide for XML & XSL
by Smart Brain Training Solutions
- List rank#5
- Price$12.99
- Rating4.3
- Reviews9
-
-
Xsl Formatting Objects: Developer's Handbook
by Douglas Lovell
- List rank#7
- Price$45.94
- Rating4.3
- Reviews8
-
XSLT Programming: Declarative Language for Transforming XML Documents with Robust Pattern Matching and Transformation Capabilities (Mastering Programming Languages Series)
- List rank#8
- Price$2.99
- Rating3.0
- Reviews1
-
Beginning XSLT 2.0: From Novice to Professional (Beginning: From Novice to Professional) (Volume 0)
by Jeni Tennison
- List rank#9
- Price$68.88
- Rating3.9
- Reviews20
-
DITA for Print: A DITA Open Toolkit Workbook, Second Edition
by Leigh W White
- List rank#10
- Price$35.95
- Rating4.0
- Reviews13
FAQ
Is XSL a good niche for Amazon KDP?
Its KDPTop opportunity score is 24/100, which makes it highly competitive. The median best seller has 6 reviews and sells for $39.30.
How many reviews do you need to rank in XSL?
The median best seller has 6 reviews, and 100% of them have fewer than 100.
What do XSL best sellers cost?
The median price is $39.30; half of the best sellers are priced between $28.16 and $51.87.
Can new books break into XSL?
0% 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.