KDP categories · Top KDP authors
Telephone Systems (Telecommunications & Sensors, Books): Amazon KDP category data
Amazon Books Best Sellers data for Telephone Systems (Telecommunications & Sensors, Books), updated Nov 2, 2026: median price $23.24, median 1 reviews, average rating 4.3 and a KDPTop opportunity score of 25/100 (highly competitive).
| Price range (middle 50%) | $16.23 – $30.88 |
|---|---|
| Average rating | 4.3 |
| New releases (90 days) | 5% |
| Books on the list | 80 |
| Store | Books |
What stands out
- Its median reviews are 1% of the parent category Telecommunications & Sensors (128), one of the easier corners under it.
- Its review barrier is lower than in 99% of Books categories: the median best seller has only 1 reviews, so new books can chart with few.
- At $23.24 its median price beats 81% of Books categories, leaving more margin per copy.
Top 10 Telephone Systems best sellers
-
The Complete iPhone 16 Guide For Seniors: An Easy, Step-by-Step Guide for Zero-Tech Beginners for Everyday Use (Full Color Edition) (The Tech-Savvy Guides for Seniors)
by Wesley Grant
- List rank#1
- Price$21.97
- Rating4.2
- Reviews211
-
The Mathematical Theory of Communication
by Claude E Shannon
- List rank#2
- Price$55
- Rating4.7
- Reviews265
-
Arizona CR-67: Low Voltage Communication Systems — Field-to-Exam Study Guide
by Alexios Grant
- List rank#3
- Price$12.99
- Rating4.5
- Reviews2
-
Meshtastic Handbook: A Beginner’s Guide for Creating LoRa Mesh Radio Systems for Off-Grid Networking, Preppers, Hikers, and Emergency Communication
by Ethan D. Ashford
- List rank#4
- Price$7.99
- Rating3.8
- Reviews11
-
The Rape of Ma Bell: The Criminal Wrecking of the Best Telephone System in the World
by Constantine Raymond Kraus
- List rank#5
- Price-
- Rating4.6
- Reviews11
-
COLECCIÓN ESPECIALIZADA EN RADIOFRECUENCIA: EVOLUCIÓN CELULAR De 1G a 5G/NR (Spanish Edition)
by Ing. Frederick Lucas
- List rank#6
- Price$30
- Reviews-
-
STARLINK EXPLAINED: An In-Depth Look at the Science, Innovation, and Vision Behind Elon Musk’s Satellite Empire and the Future of Global Connectivity (AI, Bot and Gadgets Reviews and updates Book 1)
by Brad K. James
- List rank#7
- Price$7.99
- Reviews-
-
Optical Fiber Communication: A Complete Textbook on Fiber Optic Communication Systems, Optical Networks, WDM, OTDR, LiFi and Optical Amplifiers for Engineering Students
by Arunlal CK
- List rank#8
- Price$3
- Reviews-
-
The Biggest Company on Earth: A Profile of AT&T
by Sonny Kleinfield
- List rank#9
- Price-
- Rating4.7
- Reviews9
-
Telecom Basics for Engineers 2025 : – Understanding the Foundations of Telecommunications
by Ralph Atansuyi
- List rank#10
- Price$9.99
- Rating5.0
- Reviews3
Same niche in Kindle eBooks: Telephone Systems
FAQ
Is Telephone Systems a good niche for Amazon KDP?
Its KDPTop opportunity score is 25/100, which makes it highly competitive. The median best seller has 1 reviews and sells for $23.24.
How many reviews do you need to rank in Telephone Systems?
The median best seller has 1 reviews, and 93% of them have fewer than 100.
What do Telephone Systems best sellers cost?
The median price is $23.24; half of the best sellers are priced between $16.23 and $30.88.
Can new books break into Telephone Systems?
5% 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.