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ROAS or MER? 🤔 Which metric really tells you if your marketing is working?
In this Chalkboard episode, Ralph breaks down the key differences between Return on Ad Spend (ROAS) and Marketing Efficiency Ratio (MER)—and why relying on the wrong one could cost your brand big.

💡 You'll Learn:

What ROAS and MER actually mean (and why most brands misuse them)

Why in-platform metrics (like Ads Manager) don't tell the whole story

How to calculate true marketing performance with source-of-truth data

When to prioritize MER over ROAS in your scaling strategy

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⏱️ Chapters:
0:00 - Intro: ROAS vs MER
0:10 - What Is ROAS?
1:00 - How to Calculate ROAS
2:30 - Why ROAS Alone Can Mislead You
3:45 - What's Your True Source of Truth?
5:00 - What Is MER (Marketing Efficiency Ratio)?
6:20 - Media Efficiency vs Marketing Efficiency
8:00 - How to Calculate MER
9:30 - Real Examples: What the Numbers Reveal

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