How do you measure book launch success?
- Five dimensions: sales, reviews, rank, list growth, sustainability.
- Launch-week sales: vs previous book or genre baseline.
- Reviews target by T+14: 30-80 on Amazon.
- Amazon sub-category rank: top 20 is the visibility threshold.
- Post-launch sustainability: sales velocity at T+30 vs T+7.
You measure book launch success across five dimensions: launch-week sales (vs your previous book or genre baseline), reviews on Amazon by T+14 (target 30-80), Amazon sub-category rank during launch week (top 20 is the visibility threshold), email-list growth (10-30% during launch month), and post-launch sustainability (sales velocity at T+30 vs T+7).
Chapter i·Why it matters
"Successful launch" without a definition just means "I felt good about it." Five concrete dimensions turn launch into a measurable event with comparable data across books. Authors who measure can improve; authors who don’t can only hope. The metrics also inform the next launch’s plan.
Chapter ii·What to include
- Launch-week total sales across all retailers.
- Reviews live on Amazon by T+14 (and on Goodreads).
- Amazon sub-category rank checked daily during launch week.
- Email list growth during the launch month.
- Sustainability metric: sales velocity T+30 vs T+7.
- A launch retrospective doc: what worked, what didn’t, lessons learned.
Chapter iii·Example
A second-time indie author measures her launch across the five dimensions. Launch week: 1,420 sales (vs book one’s 880 — up 61%). Reviews by T+14: 64 on Amazon (vs 38). Amazon rank: peaked at #4 in sub-category for 6 days. List growth: 18% during launch month. T+30 sales velocity: 67% of T+7 (healthy — over 50% means the book is "sticking"). She concludes book two’s launch was more successful and uses the data to plan book three.
Chapter iv·Related questions
WriteLoom holds launch metrics across the five dimensions per book — comparable data across launches.
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