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Encyclopedias (New, Used & Rental Textbooks › Reference, Books): Amazon KDP category data
Amazon Books Best Sellers data for Encyclopedias (New, Used & Rental Textbooks › Reference, Books), updated Nov 3, 2026: median price $35.15, median 40 reviews, average rating 4.5 and a KDPTop opportunity score of 24/100 (highly competitive).
| Price range (middle 50%) | $18 – $68.50 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 2% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 7% of the parent category Reference (610), one of the easier corners under it.
- Only 2% of its best sellers are under 90 days old, fewer than in 93% of Books categories: established titles hold the list.
- At $35.15 its median price beats 92% of Books categories, leaving more margin per copy.
Top 10 Encyclopedias best sellers
-
The Princeton Companion to Mathematics
by Timothy Gowers
- List rank#1
- Price$62.93
- Rating4.7
- Reviews458
-
"They Say / I Say": The Moves That Matter in Academic Writing, with 2016 MLA Update (Third Edition)
by Gerald Graff
- List rank#2
- Price$11.57
- Rating4.3
- Reviews2,151
-
500 Advanced Words: GRE Vocabulary Flashcards (Manhattan Prep GRE Prep)
- List rank#3
- Price$23.87
- Rating4.7
- Reviews698
-
The Spenser Encyclopedia
by A.C. Hamilton
- List rank#4
- Price$54.95
- Rating4.8
- Reviews7
-
Proof (Acting Edition for Theater Productions)
by David Auburn
- List rank#5
- Price$10
- Rating4.7
- Reviews440
-
Basic Vocabulary in Use: 60 Units of Vocabulary Practice in North American English With Answers
by Michael McCarthy
- List rank#6
- Price$25.54
- Rating4.7
- Reviews189
-
Privacy Rights in the Digital Age
by Christopher T. Anglim
- List rank#7
- Price-
- Reviews-
-
The Price of Inequality: How Today's Divided Society Endangers Our Future
by Joseph E. Stiglitz
- List rank#8
- Price$10.77
- Rating4.5
- Reviews1,701
-
The Craft of Research, Fourth Edition (Chicago Guides to Writing, Editing, and Publishing)
by Wayne C. Booth
- List rank#9
- Price-
- Rating4.6
- Reviews2,690
-
How to Write a Lot: A Practical Guide to Productive Academic Writing (First Edition, 2017)
by Paul J. Silvia
- List rank#10
- Price$13.52
- Rating4.5
- Reviews925
FAQ
Is Encyclopedias a good niche for Amazon KDP?
Its KDPTop opportunity score is 24/100, which makes it highly competitive. The median best seller has 40 reviews and sells for $35.15.
How many reviews do you need to rank in Encyclopedias?
The median best seller has 40 reviews, and 62% of them have fewer than 100.
What do Encyclopedias best sellers cost?
The median price is $35.15; half of the best sellers are priced between $18 and $68.50.
Can new books break into Encyclopedias?
2% 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.