Every month some brand posts record revenue — and six months later it's putting out cash-flow fires. The difference between growing and growing profitably comes down to 12 numbers. Here they are, sorted.
An e-commerce business grows profitably when it tracks three blocks of numbers together: how much it costs to get each customer (acquisition), how much that customer keeps buying (customer value), and how much is actually left after every cost (profitability). Selling more without improving these three blocks isn't growth — it's spend disguised as success.
Because sales volume says nothing about the cost of getting those sales, or whether those customers come back. A brand can sell more this month and be closer to running out of cash than it was six months ago. The only way to know is to track the right numbers, not just total revenue.
What it costs to bring people in, and how many of them convert.
Do the customers you bring in stick around and buy again?
Of all that, how much is actually left over?
Customer Acquisition Cost. Everything you spend to land a sale — ads, commissions, tools, part of the team — divided by the customers who actually came in. Looking only at your ad manager's cost-per-click is lying to yourself.
Conversion Rate. The share of visits that end up buying. It's the store's thermometer: you can have the best traffic in the world, but if the site doesn't convert, you're paying people to leave.
How much revenue, on average, each visit generates. It blends conversion and order value into a single number.
Lifetime Value. Everything a customer is worth over the full relationship, not just the first purchase. A high LTV gives you room to spend more on acquisition.
Average Order Value. The average value of each order. Raising it — with bundles, upsells, free-shipping thresholds — improves profitability without bringing in a single new customer.
How many customers buy again. If no one comes back, every month you're starting from zero.
What share of your customers stays active with the brand over time. Retention is usually cheaper than acquisition.
What's left of a sale after variable costs — product, shipping, commissions, direct media. You can post huge revenue with a margin that doesn't add up.
Marketing Efficiency Ratio. How much revenue the business generates against total marketing spend. Unlike campaign-level ROAS, it looks at the full picture.
The ratio between what a customer is worth and what it costs to get them. Probably the single most important number on this list.
How long it takes the business to recover what it spent to acquire a customer.
How much of the growth actually happened because of a marketing action, versus what would have happened anyway.
A common industry benchmark for LTV:CAC. Not a guaranteed minimum — it's an order of magnitude, not a rigid target. Well below it, you're burning cash to grow; well above it, you're probably under-investing in acquisition.
CAC without LTV is spend with no context. LTV without retention is an illusion.
| Block | Question it answers | Metrics |
|---|---|---|
| Acquisition | What does it cost to bring in and convert traffic? | CAC · CVR · Revenue per visitor |
| Customer value | Do the customers you bring in stick around? | LTV · AOV · Repeat purchase · Retention |
| Profitability | Does the growth leave any money? | Contribution margin · MER · LTV:CAC · Payback · Incrementality |
TITANPush is a marketing platform for e-commerce in Latin America that combines onsite engagement with programmatic advertising. Each block of numbers has a lever, and that's where it works:
With Ads, TITANPush's own programmatic advertising (DSP + DCO + contextual AI) running on the open web, complementary to Google and Meta, built to move conversion, not just traffic.
With Conversations (multi-agent WhatsApp) and WhatsApp automation to recover carts and re-engage customers who already know the brand — always cheaper than chasing new traffic.
With onsite recommenders — AI Recommendations, Most Popular, Featured — that lift average order value without a single new customer.
With Audiences, the dashboard that connects real on-site behavior with action.
The industry often uses 3:1 as a reasonable benchmark: well below that, you're burning cash to grow; well above it, you're probably under-investing in acquisition.
Repeat purchase looks at transactions (how many bought again); retention looks at relationships (what share of the base is still active over time).
ROAS measures a single campaign; MER looks at total marketing spend against total business revenue — the full picture.
No. You can post more revenue and still have a contribution margin that doesn't cover the business. Profitable growth is measured with all 12 numbers together, not revenue alone.
With CAC, CVR and AOV: all three can be calculated from data you already have in your store and ad platform, and all three can be moved with concrete short-term actions.
TITANPush helps you move CAC, AOV and retention from a single platform: Ads, Conversations, recommenders and Audiences, natively integrated with your Tiendanube, Shopify or VTEX store.
Try TITANPush for freeBy the TITANPush team · Updated: [add publish date]