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Ecommerce Blended ROAS & Marketing Efficiency Ratio (MER) Template

The true measure of ecommerce marketing health in a post-cookie tracking world.

Shopify & Ad Networks
Google Sheets
Looker Studio
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Looker Studio
[Template] Ecommerce Blended ROAS & Marketing Efficiency Ratio (MER) Template
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Date range: Last 30 days ▾
Week / Month: All ▾
Channel: All ▾
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Looker Studio Template by Datapipe

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Blended MER (ROAS)
4.36x
▲ +0.41x highly profitable scaling
Total Store Sales
$64,820.00
▲ +18.4% net revenue
Total Ad Spend
$14,850.00
▲ +8.2% all channels combined
Ad Spend as % Sales
22.9%
▲ -2.1% healthy cost ratio

Performance Progression

Daily trend over the last 30 days
Total Store Revenue Total Paid Media Spend
100% 75% 50% 25% Day 1 Day 7 Day 14 Day 21 Day 28 Day 30

Weekly MER & Marketing Efficiency

Correlation between weekly ad spend increases and realized store sales.
Wk 1 4.1x MER ($14.8k rev / $3.6k spend)
Wk 2 4.4x MER ($16.2k rev / $3.7k spend)
Wk 3 4.5x MER ($17.1k rev / $3.8k spend)
Wk 4 4.4x MER ($16.7k rev / $3.8k spend)

Weekly Marketing Efficiency Cohorts

Comparing spend against realized revenue.
Week ↕Store Revenue ↕Ad Spend ↕MER Ratio ↕
Week 1$14,800.00$3,610.004.10x
Week 2$16,200.00$3,680.004.40x
Week 3$17,100.00$3,800.004.50x
Week 4$16,720.00$3,760.004.45x
Showing 1 - 4 of 4 rows
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Data Sources for This Report

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Connect these data sources in Datapipe to automate daily sync into your Google Sheets and Looker Studio dashboard.

Shopify Store

Total Omnichannel Revenue

Provides gross sales, order volume, net payments, and customer acquisition numbers.

Shopify OAuth Add Shopify ➔

Meta Ads

Paid Social Ad Spend

Feeds daily Facebook and Instagram ad spend into the blended ROAS formula.

OAuth 1-Click Add Meta Ads ➔

Google Ads

Paid Search & Performance Max Spend

Feeds daily Google advertising spend into the Marketing Efficiency Ratio (MER).

Google OAuth Add Google Ads ➔

Google Sheets

Automated Data Warehouse

Datapipe synchronizes fresh data into a dedicated Google Sheet every morning, keeping your numbers formatted and ready.

Google OAuth Included with Datapipe

Google Looker Studio

Visual Reporting Dashboard

Connects to your Google Sheet to render executive scorecards, interactive date filters, and client-ready charts.

Free Google Account Open in Looker Studio ↗

What this Blended ROAS & MER Dashboard Tracks

Ad platform in-app attribution is plagued by signal loss and duplicate conversions. Marketing Efficiency Ratio (MER = Total Store Revenue / Total Ad Spend) gives founders and CMOs the one uncheatable metric that matters.

Total Store Revenue

currency

Shopify or WooCommerce net sales.

Why it matters: True top-line cash into bank.

Total Paid Media Spend

currency

Combined spend across Meta, Google, and Reddit ads.

Why it matters: Full marketing investment.

Marketing Efficiency Ratio (MER)

number

Total Revenue / Total Ad Spend.

Why it matters: The single most reliable metric for scaling profitably.

Marketing % of Revenue

percent

Total Ad Spend / Total Revenue.

Why it matters: Ensures marketing costs stay within safe margins (< 25%).

How to Use this Template in 3 Simple Steps

1

Make a Copy in Looker Studio

Click "Make a copy in Looker Studio" to launch Google Looker Studio with this report title, or download the formatted CSV to import directly.

2

Connect Your Account

Sign in to Datapipe and connect your Shopify & Ad Networks data source in 1 click. Datapipe pulls your real historical numbers and syncs automatically with Google Sheets.

3

Auto-Refresh Every Morning

Your Looker Studio report stays fresh on schedule without downloading CSVs or manual spreadsheet maintenance.

Frequently Asked Questions

Can I view and copy this template without signing into Datapipe?

Yes. You can click "Make a copy in Looker Studio" to create a copy directly in your Google Looker Studio account, or download the CSV data. When you want to automate live data refreshes from your actual Shopify & Ad Networks account, connect with Datapipe.

Why is blended MER better than platform-reported ROAS?

Because ad networks often claim the same conversion multiple times. MER compares total cash sales to total ad spend.

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