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
In WriteLoom
A launch plan, not a launch day
WriteLoom holds launch metrics across the five dimensions per book — comparable data across launches.
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