Facebook Ads Insights Tool

Facebook Ads Cost Per Purchase Benchmarks for Legal

See how your purchase costs compare. Explore ecommerce conversion cost benchmarks by industry, region, and campaign type

Cost Per Purchase for Legal

October 2024 - October 2025

Insights

Detailed observation of presented data

Facebook Ads cost-per-purchase benchmarks: Legal, All countries available

  • Based on $3B in advertising data, Legal cost-per-purchase is consistently above the global baseline—on average about 6.3x higher over the period analyzed.
  • The series is highly volatile (average month-to-month change of 55.6%), with a sharp spike in January and a mid-year trough in May.
  • Seasonal shape is clear: elevated costs in Q4 and into January, softer costs in late spring, and a temporary rebound in July; the global trend remains relatively stable with mild softening into summer.
  • From the first to the last month observed, Legal costs decreased 64.1%, while the global benchmark slipped only 2.1%.

What this report covers

This analysis looks at cost-per-purchase trends for industry Legal and target country All countries available compared to the global trend. The analysis is based on $3B worth of advertising data from our dataset, which provides strong directional benchmarks.

Legal cost-per-purchase: key statistics

  • Period average: 311.32
  • High: 814.46 (January 2025)
  • Low: 87.72 (May 2025)
  • Range: 726.74
  • Change from first to last month: -64.1% (October 2024 to August 2025)
  • Volatility: 55.6% average absolute month-to-month change
  • Notable movements:
  • Largest increase: +166.8% (June to July 2025)
  • Steepest drop: -78.4% (January to February 2025)
  • Distribution: 5 of 11 months sit above the period average, clustered in Q4, January, and July.

Observed seasonality in the Legal data:

  • Q4 and January are elevated: October–December averaged 443.40, with an additional surge in January (814.46).
  • Spring softness: costs fell sharply from February into a May low (87.72).
  • Mid-summer rebound: July jumped back to 366.65 before easing in August (159.20).

Global baseline comparison

  • Period average (overlapping months): 49.24
  • High: 53.89 (February 2025)
  • Low: 43.19 (November 2024)
  • Range: 10.69
  • Change from first to last month: -2.1% (October 2024 to August 2025)
  • Volatility: 4.7% average absolute month-to-month change

Relative positioning of Legal vs. global:

  • Consistently above market every month, ranging from about 1.7x (May 2025) to 15.6x (January 2025) the global level; average premium ~6.3x.
  • Legal exhibits far greater dispersion (range 726.74 vs. 10.69) and volatility (55.6% vs. 4.7%) than the global benchmark.
  • The baseline shows mild seasonality (slight February bump) and gradual softening into summer, while Legal shows pronounced peaks and troughs.

Takeaway for marketers

Legal cost-per-purchase across All countries available sits well above the global benchmark and follows a strong seasonal curve—peaking around late Q4 and January, dipping in late spring, and briefly rebounding mid-summer—while the global trend remains comparatively stable. Understanding cost-per-purchase benchmarks on Facebook Ads in industry Legal and All countries available helps advertisers make more efficient budget and creative choices.

Understanding the Data

Insights & analysis of Facebook advertising costs

Facebook advertising costs vary based on many factors including industry, target audience, ad placement, and campaign objectives. In the Legal industry, Facebook ad costs can be influenced by seasonal trends and market competition. Geographic targeting affects ad costs based on market competition and user engagement in different regions. Different campaign objectives lead to varying costs based on how Facebook optimizes for your specific goals. The data shown represents median values across multiple campaigns, and individual results may vary based on ad quality, audience targeting, and campaign optimization.

Why we use median instead of average

We use the median CTR because the underlying distribution of click-through rates is highly skewed, with a small share of campaigns achieving extremely high CTRs. These outliers can inflate a simple average, making it less representative of what most advertisers actually experience. By using the median—which sits at the midpoint of all campaigns—we provide a more rigorous and realistic benchmark that reflects the true underlying data model and helps you set attainable performance expectations.

Key Factors Affecting Facebook Ad Costs

  • Competition within your selected industry and audience demographics
  • Ad quality and relevance score – higher quality ads can lower costs
  • Campaign objective and bid strategy
  • Timing and seasonality – costs often increase during holiday periods
  • Ad placement (News Feed, Instagram, Audience Network, etc.)

Note: This data represents industry median values and benchmarks. Your actual costs may vary based on specific targeting, ad creative quality, and campaign optimization.

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The data behind the benchmarks

All data is sourced from over $3B in Facebook ad spend, collected across thousands of ad accounts that use Superads daily to analyze and improve their campaigns. Every data point is fully anonymized and aggregated—no individual advertiser is ever exposed.

This dataset updates frequently as new ad data flows in. It will only get bigger and better.

What's a healthy cost per purchase for ecommerce brands?

It depends on your product price and margins. Most brands aim for $10 to $50. For higher-ticket products, a higher CPA may be acceptable as long as you're maintaining a strong return on ad spend.

How does product price impact CPA benchmarks?

Higher-priced products typically have a higher CPA because people take longer to convert. That's not necessarily a problem if your margin can support it. You should measure CPA in context with AOV and LTV.

Why are my purchase costs going up despite stable ROAS?

Your AOV may be increasing, which helps maintain ROAS even if CPA rises. You could also be facing higher CPMs, lower conversion rates, or creative fatigue.

Should I use manual bidding to control CPA more effectively?

Manual bidding can help if you're struggling to stay within target CPA. It's best used by experienced advertisers who can monitor performance and adjust regularly. It gives more control, but also requires more effort.

How do I scale spend without letting CPA skyrocket?

Increase budget gradually, rotate creative often, and avoid overlapping audiences. Scaling too quickly can lead to audience saturation and rising CPAs.