The incomplete number

Blended ROAS mixes different operations.

A branded repeat purchase usually costs less than a first purchase. A high-margin product can support a different CAC from a promotional item. When everything becomes an average, profitable and unprofitable campaigns can end up with the same indicator.

The question is not only how much came back for each dollar invested. It is who bought, what they bought, what acquisition cost and how much margin remained.

Break open the average

The analysis needs to separate the sources of the result.

01

New and returning customers

Repeat purchases can inflate the metric and hide acquisition that is too expensive.

02

Channel and campaign

Google, Meta, branded search and prospecting play different roles in the journey.

03

Product and margin

Equal revenue does not mean equal contribution to cash flow.

04

First purchase and LTV

A higher CAC can be healthy when repeat purchase is real and measured.

Decision dashboard

ROAS needs economic context.

Attributed revenuePurchase value
−
Variable costsProduct, shipping, fees and media

The minimum set

  • New-customer CAC by channel and period.
  • Prospecting ROAS separated from brand, remarketing and repeat purchase.
  • Contribution margin by product or relevant group.
  • Repeat purchase rate, interval between orders and observed LTV.
  • Conversion rate and average order value by device and source.

Controlled scaling

Seasonality requires preparation, not euphoria.

During peak periods, volume and competition rise together. The operation needs to define the margin floor, available inventory, priority products and CAC limit in advance. Without that, a beautiful revenue curve can end with little profit.

Before the peak

  • Separate maintenance budget from expansion budget.
  • Define creative, offers and pages by stage of awareness.
  • Protect branded campaigns and track the incremental effect.
  • Monitor margin and availability, not only revenue.

Operational evidence

Two stores, different economics.

Aesthetic equipmentAudrey

More than R$20 million in revenue generated across five years, with two acquisition channels and continuous CAC analysis.

School uniformsUniformizado

Blended ROAS of 12.6 during the season and Google Performance Max above 20 in January.

Shared ruleMargin before scale

Every increase in spend must remain defensible when revenue, product cost, fees and repeat purchase enter the same equation.

Common questions

What needs to be answered before scaling.

Does high ROAS mean profit?

Not necessarily. Margin, shipping, fees, discounts and repeat purchase define what remains. ROAS is one part of the equation.

What is a healthy CAC?

One that fits the margin and the recovery period cash flow can support. There is no universal number.

Is remarketing saving the account?

It may only be capturing demand that already existed. Compare prospecting, brand, repeat purchase and attribution windows.

Does an old campaign need to be rebuilt?

Only when the structure no longer supports the decision. Creative fatigue and saturation may require renewal without rebuilding everything.