Ethics — Kindle Category Opportunity
Competition snapshot for the Science & Math best-seller list, ease-of-entry score 55.0/100.
Category metrics
Score
55.0
Median reviews
14
Weak share (top 20)
50%
Median price
$9.99
Median star rating
4.5
Books scanned
50
Worth writing in?
Ethics reads as low-competition at first glance, but the full list shows thin reader activity — the median book has just 14 reviews. Weak incumbents here usually mean weak demand, not an open door. Ease-of-entry score 55.0/100.
Breakout books — top 15, under 100 reviews, $0.99–4.99
Best-seller list on AmazonNo breakout books in this category.
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 |
|---|---|---|
| scientific american | 12 | 357 |
| artificial intelligence | 5 | 146 |
| big pharma | 3 | 69 |
| april 2026 | 2 | 53 |
| anthony fauci bill gates | 2 | 41 |
| bill gates big pharma | 2 | 41 |
| democracy and public health | 2 | 41 |
| fauci bill gates big | 2 | 41 |
| global war on democracy | 2 | 41 |
| pharma and the global | 2 | 41 |
| real anthony fauci bill | 2 | 41 |
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Category scores show where entry is easiest; keyword lookups show whether readers actually reach for it. A free account includes keyword competition lookups plus unlimited category scans.
After you publish: why aren't readers buying?
Category research picks the direction; review diagnosis reads the readers. The same platform clusters a book's critical reviews into severity-ranked root causes, each anchored to verbatim quotes — see it applied to a full narrative-history title.
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Research snapshot scanned on Oct 19, 2026. Refreshed periodically — not live tracking.