Encyclopedias — Kindle Category Opportunity
Competition snapshot for the Reference best-seller list, ease-of-entry score 43.0/100.
Category metrics
Score
43.0
Median reviews
173.5
Weak share (top 20)
20%
Median price
$5.70
Median star rating
4.7
Books scanned
50
Worth writing in?
Encyclopedias is between the extremes: 20% of the top 20 is under 100 reviews against a median of 173.5, so entry depends on the specific sub-genre and your launch strength. Read the breakout books below before judging. Ease-of-entry score 43.0/100.
Breakout books — top 15, under 100 reviews, $0.99–4.99
Best-seller list on Amazon| # | Title | Star | Reviews | Price |
|---|---|---|---|---|
| 9 | The Big Book of Blocky Whys?: An Unofficial Minecraft Guide for Kids Ages 7–12: 250 Questions Answered and Mind-Blowing Facts About Mobs, Villagers, ... ... Redstone (The Blockman's Bible Series 11) | 3.7 | 17 | $4.99 |
| 8 | 100,000 Whys - Encyclopedia for Curious Adults: Discover Fascinating Science Facts, History Trivia, Human Behavior, Nature Mysteries, and Surprising Answers to Everyday Questions | 4.5 | 21 | $3.99 |
| 12 | The Ultimate 100,000 Whys Book for Adults Encyclopedia: Look Beyond “Why”—Explore Clear Answers to Everyday Questions Across Mind, Life, Science, and the World Around You | 4.2 | 59 | $2.99 |
High-frequency phrases in this category's titles
Mine all categoriesHigh-frequency phrases mined from the 50 best-seller titles on this category's list. The ease-of-entry score tells you how winnable the category is; these title phrases tell you which words readers search with — use the two layers together. Frequency is a title statistic, not a search-volume estimate.
| Phrase | Titles | Rank-weighted score |
|---|---|---|
| 100 000 whys | 5 | 147 |
| unofficial minecraft | 3 | 116 |
| gods goddesses | 2 | 95 |
| ultimate guide | 2 | 93 |
| 50th anniversary | 2 | 86 |
| answers to everyday questions | 2 | 82 |
| unofficial minecraft guide | 2 | 76 |
| surprising answers | 3 | 75 |
| mind blowing facts | 2 | 74 |
| serial killers | 3 | 72 |
| magical arts | 2 | 70 |
| spells the ultimate reference | 2 | 70 |
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Research snapshot scanned on Oct 19, 2026. Refreshed periodically — not live tracking.