Collections & Anthologies — Kindle Category Opportunity
Competition snapshot for the Romance best-seller list, ease-of-entry score 48.0/100.
Category metrics
Score
48.0
Median reviews
5,933.5
Weak share (top 20)
30%
Median price
$1.99
Median star rating
4.2
Books scanned
50
Worth writing in?
The Collections & Anthologies list shows real reader demand with room left for newcomers: the median book carries 5933.5 reviews, yet 30% of the top 20 still sit under 100 reviews. 3 top-15 books hold fewer than 100 reviews at $0.99–4.99 — classic self-publishing breakout books. Ease-of-entry score 48.0/100.
Breakout books — top 15, under 100 reviews, $0.99–4.99
Best-seller list on Amazon| # | Title | Star | Reviews | Price |
|---|---|---|---|---|
| 9 | 40 EXTREMELY HOT AND TABOO EROTICA SHORT STORIES (ADULT EXPLICIT STORY BUNDLE) | 3.4 | 43 | $0.99 |
| 14 | Humiliated and Neglected Wife of a Husband: A 2-Book Collection of Billionaire, Marriage-in-Crisis, Second-Chance Romances (marriage in crisis: season 2) | 4.3 | 45 | $4.99 |
| 3 | The Byrne Brothers, Boxed Set 1 | 4.7 | 73 | $0.99 |
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 |
|---|---|---|
| romance collection | 4 | 97 |
| reverse harem | 3 | 86 |
| steamy billionaire romance | 3 | 80 |
| second chance | 3 | 78 |
| billionaire marriage in crisis | 2 | 71 |
| collection of billionaire marriage | 2 | 71 |
| crisis second chance romances | 2 | 71 |
| husband book collection | 2 | 71 |
| marriage in crisis second | 2 | 71 |
| neglected wife | 2 | 71 |
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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.