KDP categories · Top KDP authors
Borland Delphi: Amazon KDP category data
Amazon Books Best Sellers data for Borland Delphi, updated Nov 3, 2026: median price $39.64, median 9 reviews, average rating 4.1 and a KDPTop opportunity score of 23/100 (highly competitive).
| Price range (middle 50%) | $29.98 – $49.99 |
|---|---|
| Average rating | 4.1 |
| New releases (90 days) | 5% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 3% of the parent category Programming Languages (297), one of the easier corners under it.
- At $39.64 its median price beats 93% of Books categories, leaving more margin per copy.
- Its review barrier is lower than in 84% of Books categories: the median best seller has only 9 reviews, so new books can chart with few.
Top 10 Borland Delphi best sellers
-
More Coding in Delphi
by Nick Hodges
- List rank#1
- Price$14.99
- Rating4.7
- Reviews33
-
DELPHI: THE COMPLETE GUIDE TO CROSS-PLATFORM NATIVE APPLICATION DEVELOPMENT: Build Windows, Android, iOS, macOS, and Linux Apps with VCL, FireMonkey, FireDAC, and REST Client Libraries
by SOFIA DRAYCOTT
- List rank#2
- Price$8.99
- Reviews-
-
Fearless Cross-Platform Development with Delphi: Expand your Delphi skills to build a new generation of Windows, web, mobile, and IoT applications
by David Cornelius
- List rank#3
- Price$25.06
- Rating4.7
- Reviews11
-
Desenvolvimento Web Profissional com Delphi e Dext Framework: APIs REST, Arquitetura Moderna e Aplicações Escaláveis em Nuvem com Delphi (Série Dext Developer) (Portuguese Edition)
by Cesar Romero
- List rank#4
- Price$35
- Rating5.0
- Reviews2
-
The Little Book Of Delphi Programming: Learn To Program with Object Pascal (Little Programming Books)
by Huw Collingbourne
- List rank#5
- Price$9.99
- Rating4.5
- Reviews65
-
Delphi in all its glory: AI-assisted development: Tested on 150000 lines of code: An honest guide to AI for the Delphi programmers
by eng. Gabriel Moraru
- List rank#6
- Price$50.12
- Rating5.0
- Reviews2
-
Developing Custom Delphi Components: Master the Art of Creating Powerful Delphi Software Components
by Ray Konopka
- List rank#7
- Price-
- Rating5.0
- Reviews1
-
The Delphi Way: From Object Pascal fundamentals to production-ready Delphi systems.
by David Buch
- List rank#8
- Price$29.99
- Rating1.0
- Reviews1
-
Coding in Delphi
by Nick Hodges
- List rank#9
- Price$14.99
- Rating4.4
- Reviews48
-
Object Pascal Handbook Delphi 10.4 Sydney Edition: The Complete Guide to the Object Pascal programming language for Delphi 10.4 Sydney
by Marco Cantu
- List rank#10
- Price$48.50
- Rating4.6
- Reviews51
FAQ
Is Borland Delphi a good niche for Amazon KDP?
Its KDPTop opportunity score is 23/100, which makes it highly competitive. The median best seller has 9 reviews and sells for $39.64.
How many reviews do you need to rank in Borland Delphi?
The median best seller has 9 reviews, and 100% of them have fewer than 100.
What do Borland Delphi best sellers cost?
The median price is $39.64; half of the best sellers are priced between $29.98 and $49.99.
Can new books break into Borland Delphi?
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.