KDP categories · Top KDP authors
Unicode: Amazon KDP category data
Amazon Books Best Sellers data for Unicode, updated Nov 2, 2026: median price $30.83, median 6 reviews, average rating 4.4 and a KDPTop opportunity score of 27/100 (highly competitive).
| Price range (middle 50%) | $13.74 – $59.99 |
|---|---|
| Average rating | 4.4 |
| New releases (90 days) | 0% |
| Books on the list | 49 |
| Store | Books |
What stands out
- Only 0% of its best sellers are under 90 days old, fewer than in 99% of Books categories: established titles hold the list.
- Its median reviews are 17% of the parent category APIs & Operating Environments (36), one of the easier corners under it.
- Its review barrier is lower than in 88% of Books categories: the median best seller has only 6 reviews, so new books can chart with few.
Top 10 Unicode best sellers
-
Code: The Hidden Language of Computer Hardware and Software
by Charles Petzold
- List rank#1
- Price$32.58
- Rating4.8
- Reviews1,085
-
Signs & Symbols of the World: Over 1,001 Visual Signs Explained
by D.R. McElroy
- List rank#2
- Price$12.23
- Rating4.6
- Reviews238
-
Programming Perl: Unmatched power for text processing and scripting
by Tom Christiansen
- List rank#3
- Price$30.39
- Rating4.5
- Reviews121
-
The Hieroglyphic Catalog: Navigating The Egyptian Hieroglyphs | Gardiner’s Sign List With Its Description, Pronunciation And Unicode
by Pharaoh Press
- List rank#4
- Price$9.99
- Rating4.4
- Reviews29
-
Emoji Encyclopedia (The Emoji Movie)
by Cordelia Evans
- List rank#5
- Price-
- Rating4.0
- Reviews7
-
Face with Tears of Joy: A Natural History of Emoji
by Keith Houston
- List rank#6
- Price$9.08
- Rating4.5
- Reviews6
-
Regular Expression Pocket Reference: Regular Expressions for Perl, Ruby, PHP, Python, C, Java and .NET (Pocket Reference (O'Reilly))
by Tony Stubblebine
- List rank#7
- Price$13.99
- Rating4.4
- Reviews212
-
"unicode," the Universal Telegraphic Phrase-Book: A Code of Cypher Words for Commercial, Domestic, and Familiar Phrases in Ordinary Use in Inland and ... Firms Who Are Unicode Users (Classic Reprint)
by Limited Cassel and Company
- List rank#8
- Price$31.27
- Rating5.0
- Reviews1
-
Fonts & Encodings: From Advanced Typography to Unicode and Everything in Between
by Yannis Haralambous
- List rank#9
- Price$59.97
- Rating4.3
- Reviews23
-
Unicode Explained: Internationalize Documents, Programs, and Web Sites
by Jukka K. Korpela
- List rank#10
- Price$59.99
- Rating4.3
- Reviews19
FAQ
Is Unicode a good niche for Amazon KDP?
Its KDPTop opportunity score is 27/100, which makes it highly competitive. The median best seller has 6 reviews and sells for $30.83.
How many reviews do you need to rank in Unicode?
The median best seller has 6 reviews, and 85% of them have fewer than 100.
What do Unicode best sellers cost?
The median price is $30.83; half of the best sellers are priced between $13.74 and $59.99.
Can new books break into Unicode?
0% 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.