GrowthStore E-commerce Dominance
Client: GrowthStore
Overview
GrowthStore had exceptional products but couldn't scale profitably. Their customer acquisition costs were eating margins, one-time buyers rarely returned, and they had no system for turning customers into advocates. We rebuilt their entire growth engine—from acquisition through retention—creating a machine that turned every customer into a repeat buyer and every repeat buyer into a referral source.
What GrowthStore was facing
Customer acquisition cost (CAC) of $67 on products with $45 average margin
Only 12% of customers ever made a second purchase
No email marketing or post-purchase nurture sequences
Ad spend of $120K/month with unclear attribution and diminishing returns
Zero referral program despite high NPS scores from existing customers
How we solved it
Unit economics overhaul
Analyzed customer lifetime value by acquisition channel and product category, identifying the 20% of customers driving 80% of profit.
Retention engine buildout
Implemented a 12-touch post-purchase email sequence, loyalty program, and replenishment reminders that increased second purchases by 340%.
Referral system launch
Built a double-sided referral program that turned happy customers into acquisition channels, driving 23% of new revenue at near-zero CAC.
Paid media restructure
Rebuilt campaigns around LTV-based bidding, focusing spend on high-value customer profiles and retargeting existing buyers for repeat purchases.
What we delivered
We transformed GrowthStore from a one-purchase business into a retention machine. The new system combined post-purchase nurture sequences, a points-based loyalty program, automated replenishment reminders, and a viral referral program. Paid media shifted from acquisition-only to a balanced strategy that valued existing customers as much as new ones.
The transformation
"We were so focused on getting new customers that we ignored the ones we already had. NEXUS showed us that retention IS acquisition—and our P&L has never looked better."
What made this work
Retention is the most underrated growth lever. A 5% increase in retention can drive 25-95% profit increase.
Referral programs only work when the core experience is excellent. Fix the product and service first.
LTV-based bidding changes everything. Optimizing for one purchase leaves money on the table.
Post-purchase communication is prime real estate. Most brands waste it on receipts instead of relationship-building.
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