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Platform Portability
Uses Substack subdomain (speedrun.substack.com). Migrating would require subscribers to re-subscribe at a new address.
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Data updated Yesterday

Scarlet Ink
73K subs
Accelerated
38K subs
ILLUMINATION Library for Freelance Writers
37K subs
Avg Comments
9.0
Avg Likes
64.0
Engagement Rate
0.04%
GTM Vault
25K subscribers
(comments + likes) / subscribers
Typical for lists with 168K+ subscribers
Quality Score
Engagement vs Business
0.04% engagement rate
See a16z speedrun's score breakdown & category ranking
Quality sub-scores, category percentile, and engagement benchmarks
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Weekly Growth
+1.2%
Revenue analysis available
See full revenue breakdown
MRR methodology, pricing analysis, and revenue projections
Create free accountUsed by thousands of newsletter operators and advertisers
$21–$47
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Category benchmarks and audience-size adjusted rates
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valve.com
lucasfilm.com
macymills.com
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Sign up freePublishing Frequency
Weekly
Last published Mar 10, 2026
Usually publishes Tue, Wed, Thu
1.1 posts/week avg
Business Pricing
$144.67/mo avg
Your newsletter: Free
Monetization Readiness
Business newsletters typically start charging at ~2K subscribers
Above the typical threshold
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Free newsletter in Business where the average paid tier is $145/mo — accessible to a wider audience.