KDP categories · Top KDP authors
Mainframes & Minicomputers (Hardware, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Mainframes & Minicomputers (Hardware, Kindle eBooks), updated Nov 3, 2026: median price $7.79, median 8 reviews, average rating 4.3 and a KDPTop opportunity score of 21/100 (highly competitive).
| Price range (middle 50%) | $3.99 – $12.87 |
|---|---|
| Average rating | 4.3 |
| New releases (90 days) | 8% |
| Books on the list | 60 |
| Store | Kindle eBooks |
What stands out
- Its review barrier is lower than in 84% of Kindle eBooks categories: the median best seller has only 8 reviews, so new books can chart with few.
- Prices spread wide: the middle half runs from $3.99 to $12.87, so budget editions and premium or boxed sets sell side by side.
Top 10 Mainframes & Minicomputers best sellers
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Raspberry Pi 4 For Beginners And Intermediates: A Comprehensive Guide for Beginner and Intermediates to Master the New Raspberry Pi 4 and Set up Innovative Projects
by Craig Berg
- List rank#1
- Price$3.99
- Rating4.1
- Reviews273
-
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#2
- Price$7.99
- Reviews-
-
NPU - NUERAL PROCCESSING UNIT: A WAY OF ADVANCED WORLD (THE SERIES OF NEW AUTHOR)
by HARI RAM
- List rank#3
- Price$0.99
- Reviews-
-
Samsung Galaxy S24 Plus User's Manual: A Comprehensive Step-by-Step Guide with Useful Tips & Tricks to Master the Samsung Galaxy S24 Plus New Features and Latest Android 14 Updates
by Perry Hoover
- List rank#4
- Price$3.95
- Rating3.5
- Reviews11
-
21st Century RPG: /Free, ILE, and MVC
by David Shirey
- List rank#5
- Price$38
- Rating4.4
- Reviews30
-
Data Center Power Systems & Electrical Safety: A Practical Guide to Power Distribution, UPS, Generators, PDUs, Electrical Safety, Troubleshooting, and ... (N.V. Edema Data Center Career Series)
by N.V. EDEMA
- List rank#6
- Price$9.99
- Reviews-
-
A Handbook for Mainframe z/OS Enterprise Architects - Architecture and Design of Large-Scale Environments
by Natabar Sahoo
- List rank#7
- Price$7
- Reviews-
-
Samsung Galaxy Tab S9 Series User Guide: The Most Complete Step by Step Manual to Mastering the Latest Samsung Galaxy Tab S9, S9 Ultra and S9 Plus Hidden ... and Updates with Useful Tips & Tricks
by Perry Hoover
- List rank#8
- Price$3.95
- Rating3.5
- Reviews32
-
A Beginner's Guide to Mainframe Hardware - Mastering the Backbone of Enterprise Computing - Book 1
by Natabar Sahoo
- List rank#9
- Price$6
- Rating5.0
- Reviews5
-
Mainframe Basics for Security Professionals: Getting Started with RACF
by Ori Pomerantz
- List rank#10
- Price$42.39
- Rating4.7
- Reviews12
Same niche in Books: Mainframes & Minicomputers
FAQ
Is Mainframes & Minicomputers a good niche for Amazon KDP?
Its KDPTop opportunity score is 21/100, which makes it highly competitive. The median best seller has 8 reviews and sells for $7.79.
How many reviews do you need to rank in Mainframes & Minicomputers?
The median best seller has 8 reviews, and 92% of them have fewer than 100.
What do Mainframes & Minicomputers best sellers cost?
The median price is $7.79; half of the best sellers are priced between $3.99 and $12.87.
Can new books break into Mainframes & Minicomputers?
8% 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.