Understanding ROAS
**Return on Ad Spend (ROAS)** measures how much revenue you make for every dollar spent on advertising. The formula is simple:
ROAS = Total Revenue / Total Ad Spend
**Example:** If you spend $1,000 on ads and generate $5,000 in revenue, your ROAS is 5:1 (or 5x).
**Healthy Benchmarks:** Most Amazon sellers aim for ROAS of 2.5x to 5x, depending on:
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Product margins
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Market competition
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Business goals
A 3:1 ROAS means you're making $3 for every $1 spent, leaving room for costs and profit.## Advertising Cost of Sales (ACoS)
**ACoS** is the inverse of ROAS and shows what percentage of sales revenue goes toward advertising.
ACoS % = (Total Ad Spend / Total Sales) × 100
**Example:** $1,000 in ad spend with $5,000 in revenue = 20% ACoS
**Target ACoS:** Ranges from 15-40% depending on margins. Lower is better, but must be sustainable for growth.
Click-Through Rate (CTR)
**CTR** measures how many people click your ad versus impressions.
CTR % = (Clicks / Impressions) × 100
Typical Amazon PPC CTR ranges from 0.2% to 2.0%. A declining CTR may indicate:
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Stale ad creative
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Poor keyword relevance
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Increased competition
Conversion Rate**Conversion Rate** shows what percentage of clicks result in purchases.
Conversion Rate % = (Purchases / Clicks) × 100
Average Amazon conversion rates are 10-15% for PPC. If yours is lower:
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Review product quality/pricing
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Improve product listing
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Check for technical issues
Cost Per Click (CPC)**CPC** is what Amazon charges per ad click.
CPC = Total Ad Spend / Total Clicks
Factors affecting CPC:
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Keyword competition
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Product category
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Bid amount
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Quality Score
Key Metrics SummaryTrack these together for comprehensive campaign analysis:- **ROAS:** Profitability (higher is better)
- **ACoS:** Cost efficiency (lower is better)
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- **CTR:** Ad appeal (higher is better)
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- **Conversion Rate:** Product appeal (higher is better)
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- **CPC:** Cost efficiency (lower is better)