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Mainframes & Minicomputers (Hardware & DIY, Books): Amazon KDP category data
Amazon Books Best Sellers data for Mainframes & Minicomputers (Hardware & DIY, Books), updated Nov 3, 2026: median price $35.99, median 16 reviews, average rating 4.2 and a KDPTop opportunity score of 24/100 (highly competitive).
| Price range (middle 50%) | $16.99 – $54 |
|---|---|
| Average rating | 4.2 |
| New releases (90 days) | 4% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 11% of the parent category Hardware & DIY (152), one of the easier corners under it.
- At $35.99 its median price beats 92% of Books categories, leaving more margin per copy.
- Only 4% of its best sellers are under 90 days old, fewer than in 82% of Books categories: established titles hold the list.
Top 10 Mainframes & Minicomputers best sellers
-
PiDP-11: A minicomputer in the office! (Radio Today guides)
by Andrew Barron
- List rank#1
- Price$20.50
- Rating4.9
- Reviews15
-
iPhone 12 User Guide For Seniors: Master the Features of the IPhone 12 with Step-By-Step Tutorials
by Troy Hearth
- List rank#2
- Price$16.99
- Rating4.2
- Reviews5
-
A Beginner's Guide to Mainframe z/OS - Mastering Mainframe's Flagship Operating System - Book 2
by Natabar Sahoo
- List rank#3
- Price$15
- Rating4.8
- Reviews5
-
ROS 2 from Scratch: Get started with ROS 2 and create robotics applications with Python and C++
by Edouard Renard
- List rank#4
- Price$35.99
- Rating4.9
- Reviews49
-
Raspberry Pi For Dummies (For Dummies (Computer/Tech))
by Sean McManus
- List rank#5
- Price$18.99
- Rating4.3
- Reviews155
-
iPhone Duo User Guide for Beginners and Seniors: Clear Step-by-Step Guidance for Setup, Two-Screen Workflows, Everyday Use, Security, and Troubleshooting (Everyday Apple Tech Made Clear)
by Aurelian Veyrano
- List rank#6
- Price$7.99
- Reviews-
-
PiDP-1 (Radio Today guides)
by Andrew Barron
- List rank#7
- Price$19.50
- Rating5.0
- Reviews4
-
An Introduction to Quantum Computing
by Phillip Kaye
- List rank#8
- Price$51.11
- Rating4.4
- Reviews36
-
Murach's CICS for the COBOL Programmer - Modern Guide to Web & Component-Based Programming: Essential COBOL Programming Book with Current Commands & Features for Professional Development
by Raul Menendez
- List rank#9
- Price$54
- Rating4.8
- Reviews72
-
Architecting High-Performance Embedded Systems: Design and build high-performance real-time digital systems based on FPGAs and custom circuits
by Jim Ledin
- List rank#10
- Price$35.99
- Rating4.5
- Reviews47
Same niche in Kindle eBooks: Mainframes & Minicomputers
FAQ
Is Mainframes & Minicomputers a good niche for Amazon KDP?
Its KDPTop opportunity score is 24/100, which makes it highly competitive. The median best seller has 16 reviews and sells for $35.99.
How many reviews do you need to rank in Mainframes & Minicomputers?
The median best seller has 16 reviews, and 94% of them have fewer than 100.
What do Mainframes & Minicomputers best sellers cost?
The median price is $35.99; half of the best sellers are priced between $16.99 and $54.
Can new books break into Mainframes & Minicomputers?
4% 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.