Radio — Kindle Category Opportunity
Competition snapshot for the Humor & Entertainment best-seller list, ease-of-entry score 57.0/100.
Category metrics
Score
57.0
Median reviews
64
Weak share (top 20)
50%
Median price
$7.99
Median star rating
4.5
Books scanned
50
Worth writing in?
Radio sits below our demand gate: 50% of the top 20 is under-reviewed, but overall reader activity is thin too. It can be a quiet corner to build in slowly — validate demand with keyword lookups before committing a series. Ease-of-entry score 57.0/100.
Breakout books — top 15, under 100 reviews, $0.99–4.99
Best-seller list on Amazon| # | Title | Star | Reviews | Price |
|---|---|---|---|---|
| 11 | Broadcast Hysteria: Orson Welles's War of the Worlds and the Art of Fake News | 4.4 | 61 | $2.99 |
| 4 | Bowie at the BBC: A life in interviews | 4.6 | 67 | $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 |
|---|---|---|
| howard stern | 2 | 84 |
| oral history | 2 | 68 |
| ham radio | 2 | 65 |
Sign in and click any phrase to send it straight to the keyword competition lookup.
More Humor & Entertainment categories
3 subcategories under this category
| Subcategory | Score | Median reviews |
|---|---|---|
| █████ | 68.0 | 47.5 |
| █████ | 65.5 | 12.5 |
| █████ | 62.0 | 75 |
Subcategory names are visible after sign-in — a free account unlocks every subcategory score.
Sign up free to unlockCheck the keywords before you write
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.