Retention rate is the most underutilized metric in ecommerce And it's costing br
By Noah Wickham · April 1, 2026 · Curated by George's Blog
Retention rate is the most underutilized metric in ecommerce
And it's costing brands millions
Everyone obsesses over conversion rate, CTR, ROAS, CAC
But nobody talks about how many customers actually stick around
A 5% increase in retention can increase profits by >25%
Yet most brands couldn't tell you their retention rate if you asked
They know their conversion rate down to the decimal but have no idea if customers come back
This is backwards
Acquiring a customer costs 5x more than retaining one
But brands spend 90% of their budget on acquisition and 10% on retention
Then wonder why they're on a growth treadmill burning cash
Most brands measure success by how many new customers they acquire
They should measure success by how many customers they keep
Because lifetime value beats transaction value every single time
A customer who buys once for $50 is worth $50
A customer who buys 5 times for $50 is worth $250
Simple math that most brands ignore
Stop optimizing for one-time buyers
Start optimizing for repeat buyers