KDP categories · Top KDP authors
Telephone Systems (Telecommunications, Kindle eBooks): Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Telephone Systems (Telecommunications, Kindle eBooks), updated Nov 2, 2026: median price $8, median 0 reviews, average rating 4.2 and a KDPTop opportunity score of 22/100 (highly competitive).
| Price range (middle 50%) | $5.00 – $9.99 |
|---|---|
| Average rating | 4.2 |
| New releases (90 days) | 12% |
| Books on the list | 59 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 0% of the parent category Telecommunications (100), one of the easier corners under it.
- Its review barrier is lower than in 99% of Kindle eBooks categories: the median best seller has only 0 reviews, so new books can chart with few.
Top 10 Telephone Systems best sellers
-
101 Hidden Facts About iPhone: Unlock Secrets, Boost Productivity, and Maximize Your Device: Discover the Best Kept iPhone Tips, Hidden Features, and Clever Tricks That Apple Won’t Tell You !
by Uncle Wale
- List rank#1
- Price$2.99
- Rating4.0
- Reviews1
-
iPhone 18 Pro, Pro Max & Duo for Seniors: A Large-Print Step-by-Step Visual Guide That Shows You Exactly Where to Tap | Easily Use Your New iPhone, Master Siri AI and Fix Common Problems on Your Own
- List rank#2
- Price$12.99
- Rating5.0
- Reviews48
-
Arizona CR-67: Low Voltage Communication Systems — Field-to-Exam Study Guide
by Alexios Grant
- List rank#3
- Price$12.99
- Rating4.5
- Reviews2
-
iPhone 18 Pro, Pro Max & Duo for Seniors: The All in 1 Large-Print Visual Step-by-Step Guide to Set Up Your iPhone, Master Calls, FaceTime, Photos & Apps, Block Scams & Stay Connected to your Family
- List rank#4
- Price$9.99
- Rating5.0
- Reviews6
-
The Signals Intelligence Bible: Guerrilla Secrets to Intercept and Decode Threatening Communications | Prevent Crises, Attacks, and Emergencies Before It's Too Late
by Everyday Expert
- List rank#5
- Price$9.99
- Rating4.2
- Reviews45
-
Baofeng & Quansheng Radio Bible: Discover 10 Guerrilla's Secrets of GMRS & HAM Radios in 7 Days or Less. Stay Connected When It Matters Most, Survival Guide
by Barry Harper
- List rank#6
- Price$2.99
- Rating4.6
- Reviews69
-
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-
-
Telecom Basics for Engineers 2025 : – Understanding the Foundations of Telecommunications
by Ralph Atansuyi
- List rank#9
- Price$9.99
- Rating5.0
- Reviews3
-
100 iPhone Duo Tips and Tricks: How to Master Apple's First Foldable iPhone — Two Screens, Split View, Camera Tricks, Touch ID and Battery, Step by Step (2026 Edition) (Iphone: Novice to Flawless)
by Jaison B
- List rank#10
- Price$6.99
- Reviews-
Same niche in Books: Telephone Systems
FAQ
Is Telephone Systems a good niche for Amazon KDP?
Its KDPTop opportunity score is 22/100, which makes it highly competitive. The median best seller has 0 reviews and sells for $8.
How many reviews do you need to rank in Telephone Systems?
The median best seller has 0 reviews, and 100% of them have fewer than 100.
What do Telephone Systems best sellers cost?
The median price is $8; half of the best sellers are priced between $5.00 and $9.99.
Can new books break into Telephone Systems?
12% 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.