Original research, niche analysis, and KDP marketplace insights — built on live Amazon data, not opinions.
I tested 4 fiction KDP sub-genres in May 2026 with live Amazon data. Three are trad-locked. Only cozy mystery series is indie-friendly, and only with caveats.
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I tested 25 profitable Amazon KDP niches in April 2026 using live Amazon BSR and review data. Most niche advice online is wrong, and the real winners aren't the obvious picks.
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BookRankPro pulls real Amazon BSR, sales estimates, and category rankings on demand — and runs them through Claude AI for an instant niche verdict.
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