KDP categories · Top KDP authors
Delphi: Amazon KDP category data
Amazon Books Best Sellers data for Delphi, updated Nov 2, 2026: median price $38.98, median 2 reviews, average rating 4.1 and a KDPTop opportunity score of 29/100 (highly competitive).
| Price range (middle 50%) | $26.38 – $50.17 |
|---|---|
| Average rating | 4.1 |
| New releases (90 days) | 9% |
| Books on the list | 69 |
| Store | Books |
What stands out
- Its median reviews are 1% of the parent category Programming Languages (297), one of the easier corners under it.
- Its review barrier is lower than in 96% of Books categories: the median best seller has only 2 reviews, so new books can chart with few.
- At $38.98 its median price beats 93% of Books categories, leaving more margin per copy.
Top 10 Delphi best sellers
-
The Little Book Of Delphi Programming: Learn To Program with Object Pascal (Little Programming Books)
by Huw Collingbourne
- List rank#1
- 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#2
- Price$50.12
- Rating5.0
- Reviews2
-
Free Pascal 3.2.2 Programming in 21 Days: A Hands-On Course in Modern Object Pascal (Learn Programming in 21 Days)
- List rank#3
- Price$9.99
- Reviews-
-
Object Pascal for Beginners: The Complete Conceptual Guide to Delphi and Free Pascal Programming: Master Core Principles, Language Theory, and Professional Programming Concepts without writing code
by Beth Thompson
- List rank#4
- Price$7.99
- Reviews-
-
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#5
- Price$48.50
- Rating4.6
- Reviews51
-
Masterminds of Programming: Conversations with the Creators of Major Programming Languages (Theory in Practice (O'Reilly))
by Federico Biancuzzi
- List rank#6
- Price$22.99
- Rating4.3
- Reviews62
-
Delphi Programming Projects: Build a range of exciting projects by exploring cross-platform development and microservices
by William Duarte
- List rank#7
- Price$19.14
- Rating4.2
- Reviews27
-
Building Desktop Tools in Lazarus: Create Utilities and Data-Driven Programs with Delphi Compatibility (Practical Object Pascal Programming)
by Marcus Elvin
- List rank#8
- Price$5.99
- Rating3.0
- Reviews2
-
Getting Started with XData: A Step-by-Step Guide
by Jens Fudge
- List rank#9
- Price$29.95
- Reviews-
-
Delphi Multithreading: Threads, Concurrency, Parallelism and Asynchronous Programming
by Cesar Romero Silva
- List rank#10
- Price$54.99
- Rating4.1
- Reviews7
FAQ
Is Delphi a good niche for Amazon KDP?
Its KDPTop opportunity score is 29/100, which makes it highly competitive. The median best seller has 2 reviews and sells for $38.98.
How many reviews do you need to rank in Delphi?
The median best seller has 2 reviews, and 100% of them have fewer than 100.
What do Delphi best sellers cost?
The median price is $38.98; half of the best sellers are priced between $26.38 and $50.17.
Can new books break into Delphi?
9% 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.