E-commerce marketing efficiency benchmarks help teams answer a more important question than whether revenue is growing: is growth still efficient after paid media, creative, retail media, creators, discounts, returns and acquisition cost are included? This page focuses on blended efficiency signals such as MER alongside channel-level ROAS and CAC pressure.
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This page belongs to the Traffic & Marketing silo. For detailed metrics, compare this with MER benchmarks, ROAS benchmarks, CAC benchmarks, and LTV to CAC benchmarks.
Benchmark snapshot
Key numbers and signals
Use these as directional benchmarks, then check source scope before citing a number as e-commerce-specific.
FY25 MER range in public DTC sample
Eightx calculated FY25 MER across nine public DTC and DTC-adjacent brands ranging from 2.55 to 19.07.
Median MER in sample
Eightx reported a median FY25 MER of 8.47 across its public-company DTC sample.
Ad spend in sample
The same Eightx analysis used about $1.61B in aggregate advertising or marketing spend across nine public brands.
| Benchmark | Reference point | How to read it |
|---|---|---|
| MER range | 2.55 to 19.07 in FY25 public DTC sample | Shows why a single universal MER benchmark is not useful across categories. |
| Median MER | 8.47 in the public-company sample | Useful as a reference point, but often too high for smaller private brands without public-brand demand. |
| Revenue-weighted mean | 5.84 in the Eightx sample | Helps compare efficiency against larger brands with heavier spend. |
| Meta price signal | +9% average price per ad in full-year 2025 | Paid-social cost pressure can lower efficiency if conversion or AOV does not improve. |
| Retail media growth | $53.7B U.S. retail media revenue in 2024 | Retail media can improve purchase proximity but also adds another spend layer. |
Benchmarks on this page combine e-commerce-specific data where available with broader digital advertising and retail media data when the source is widely used for e-commerce planning. Always label the metric scope when citing it.
Interpretation
MER, ROAS and CAC should not be used interchangeably
The common mistake is to call a campaign efficient because platform ROAS is strong, while total marketing spend is rising faster than total business revenue. MER helps correct that by looking at total revenue against total marketing or advertising spend.
MER
Best for blended business health because it compares total revenue with total marketing spend over the same period.
ROAS
Best for platform or campaign diagnostics, but it depends on attribution logic and can double-count assisted revenue.
CAC
Best for new-customer economics, but it must be paired with margin, LTV, retention and payback period.
Contribution margin
The final test: revenue efficiency means little if discounts, shipping, returns and fulfillment remove the profit.
Application
How to use marketing efficiency benchmarks
- Start with blended MER. Use MER to see whether the whole business is getting more or less efficient, then diagnose channel-level ROAS and CAC.
- Segment by business model. Subscription, resale, luxury, apparel and commodity e-commerce can support very different efficiency levels.
- Pair efficiency with growth. A rising MER with falling revenue may simply mean underinvestment; a falling MER with fast growth may still work if payback and retention are strong.
- Include hidden cost pressure. Discounts, free shipping, returns, fulfillment and creative production can change the true economics even when media metrics look stable.
Methodology
How this benchmark should be read
- MER is usually calculated as total revenue divided by total marketing or advertising spend in the same period.
- ROAS is narrower and usually platform-attributed; it should not be treated as a full-business profitability metric.
- Public-company MER can differ from private e-commerce brands because public brands often have more organic demand, brand search and offline awareness.
Sources
Sources used for this dataset
Cite this page
How to cite this dataset
E-commerce Marketing Efficiency Benchmarks. Best For Ecommerce. Updated 2026-05-31. Available at: https://bestforecommerce.com/ecommerce-statistics/traffic-marketing/ecommerce-marketing-efficiency-benchmarks/