KDP categories · Top KDP authors
ysk hello: Amazon KDP author data
As of Nov 6, 2026, ysk hello has 34 books on Amazon, 11 of them on a best-seller list in the last 30 days (best rank #4), mostly in C#, Microsoft Programming, Languages & Tools.
| Median price | $4.99 |
|---|---|
| Price range (middle 50%) | $4.49 – $6.50 |
| Median reviews | 1 |
| Total reviews | 4 |
| New books (30 days) | 10 |
| Breakout books (30 days) | 6 |
What stands out
- Median price $4.99, 41% below the median of their main category, C#.
- 10 new books in the last 30 days, 6 of them broke into a Best Sellers list.
ysk hello's best-ranked books
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Azure Web App Publishing Essentials: A Practical Introduction to Static Web Apps and App Service (Azure with C# and .NET Book 3)
by ysk hello
- Price$2.99
- Reviews-
- Published2026-09
-
Learn .NET MAUI by Building: An AI-Powered App in C# for Android and Windows (C#/.NET in Practice Book 4)
by ysk hello
- Price$4.99
- Reviews-
-
Building Desktop Apps with C# and WinUI 3: The Complete Guide: Learn from the Ground Up to Distribution by Building a To-Do App (C#/.NET in Practice Book 1)
by ysk hello
- Price$8
- Reviews-
-
Building WinUI Apps with Claude Code: AI-Driven Windows Desktop Development with the WinUI Agent Plugin and GitHub (C#/.NET in Practice Book 3)
by ysk hello
- Price$8
- Rating5.0
- Reviews1
-
Learn Blazor by Building a Chrome Extension: Build a Real Browser Extension in C# and WebAssembly — No JavaScript Required, with MudBlazor and Manifest V3 (C#/.NET in Practice Book 5)
by ysk hello
- Price$4.99
- Reviews-
-
Azure Functions with C# and .NET in Practice: Small automated jobs that run without a server of your own ― from Timer, HTTP, and Queue triggers to ... ... control (Azure with C# and .NET Book 1)
by ysk hello
- Price$4.99
- Reviews-
- Published2026-09
-
C# Parallelism You Can See: Understand Parallel and multithreading by watching threads and tasks in Visual Studio — from race conditions to deadlocks (C# Troubleshooting Series Book 2)
by ysk hello
- Price$4.99
- Reviews-
- Published2026-08
-
C# WinUI 3 Desukutoppu Apuri Kaihatsu Kanzen Gaido CSharp DotNET Jissen Series (Japanese Edition)
by ysk hello
- Price$0
- Rating5.0
- Reviews1
- Published2026-06
-
Supabase Practical Introduction Building a TODO App with Vuejs (Japanese Edition)
by ysk hello
- Price$0
- Rating3.0
- Reviews1
- Published2026-07
-
Ugokashite Manabu Entity Framework Core Practical Guide: A Practical Guide to Data Access with C Sharp and DotNET From Basics to Performance Tuning CSharp DotNET Jissen Series (Japanese Edition)
by ysk hello
- Price$0
- Rating5.0
- Reviews1
- Published2026-07
Main categories
FAQ
How many books does ysk hello have on Amazon?
KDPTop tracks 34 of their books; 11 made an Amazon list in the last 30 days.
Which categories does ysk hello publish in?
Their books chart most often in C#, Microsoft Programming, Languages & Tools.
How does ysk hello price their books?
The median price is $4.99; half of the books cost $4.49–$6.50.
Has ysk hello released new books recently?
10 new books in the last 30 days, 6 of which reached a Best Sellers list.
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.