KDP categories · Top KDP authors
Mainframe & Midrange: Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Mainframe & Midrange, updated Nov 2, 2026: median price $6.99, median 2 reviews, average rating 4.0 and a KDPTop opportunity score of 21/100 (highly competitive).
| Price range (middle 50%) | $5.99 – $9.99 |
|---|---|
| Average rating | 4.0 |
| New releases (90 days) | 3% |
| Books on the list | 37 |
| Store | Kindle eBooks |
What stands out
- Its review barrier is lower than in 95% of Kindle eBooks categories: the median best seller has only 2 reviews, so new books can chart with few.
- Only 3% of its best sellers are under 90 days old, fewer than in 88% of Kindle eBooks categories: established titles hold the list.
- Its median reviews are 40% of the parent category Operating Systems (5), one of the easier corners under it.
Top 10 Mainframe & Midrange best sellers
-
A Handbook for Mainframe z/OS Enterprise Architects - Architecture and Design of Large-Scale Environments
by Natabar Sahoo
- List rank#1
- Price$7
- Reviews-
-
So You Want to Be a z/OS Systems Programmer?: The Fast Track to Understanding z/OS Like a Pro (IBM Mainframe Series)
by Dennis J. Stone
- List rank#2
- Price$9.99
- Rating5.0
- Reviews1
-
Cybersecurity Mastery: Learn the Art of Detecting, Preventing, and Defeating Cyber Threats – Gain Expert Strategies and Hands-On Skills to Become an IT Expert and Lead Your Security Team
by Alan Miller
- List rank#3
- Price$9.99
- Rating4.7
- Reviews40
-
Mastering z/OS JCL: A Practical Guide to Job Control Language on the Mainframe (IBM Mainframe Series)
by Dennis J. Stone
- List rank#4
- Price$5.99
- Rating5.0
- Reviews5
-
Mastering REXX on z/OS: A Practical Guide to Automation, Scripting, and Problem Solving on the Mainframe (IBM Mainframe Series)
by Dennis J. Stone
- List rank#5
- Price$5.99
- Rating5.0
- Reviews5
-
IBM System z Assembly Language Programming: A Practical Guide to 24, 31, and 64-bit Mainframe Development (IBM Mainframe Series)
by Dennis J. Stone
- List rank#6
- Price$5.99
- Rating3.5
- Reviews2
-
IBM Mainframes Sort
by Senthil Devadhas
- List rank#7
- Price$0.99
- Rating4.1
- Reviews16
-
COBOL Basic Training Using VSAM, IMS and DB2
by Robert Wingate
- List rank#8
- Price$19.95
- Rating4.4
- Reviews19
-
PiDP-10 Up and Running: A Practical Guide to Operating Systems, Programming, and Retro Games
by Samuel P. Parke
- List rank#9
- Price$7.99
- Reviews-
-
MAINFRAME AUTOMATION WITH REXX: TSO/ISPF SCRIPTING FOR IBM Z/OS SUBTITLE : Reduce Manual Work with REXX Automation. JCL Processing, System Administration, and Operational Efficiency for z/OS
by TARA MALHOTRA
- List rank#10
- Price$7.99
- Reviews-
FAQ
Is Mainframe & Midrange a good niche for Amazon KDP?
Its KDPTop opportunity score is 21/100, which makes it highly competitive. The median best seller has 2 reviews and sells for $6.99.
How many reviews do you need to rank in Mainframe & Midrange?
The median best seller has 2 reviews, and 100% of them have fewer than 100.
What do Mainframe & Midrange best sellers cost?
The median price is $6.99; half of the best sellers are priced between $5.99 and $9.99.
Can new books break into Mainframe & Midrange?
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.