Shared Leads vs. Exclusive Leads for Personal Injury Firms: A Real Cost-Per-Case Breakdown

A PI marketing director in Atlanta recently audited two lead vendors side by side. Vendor A: $45 per lead, 90 leads per month. Vendor B: $210 per lead, 18 leads per month. By cost per lead, Vendor A looked like the obvious winner. When she tracked both through to signed cases, Vendor B produced cases at $2,800 each. Vendor A came in at $4,900. She had been overpaying for the “cheap” source for eight months.

This is the shared vs. exclusive lead problem. Cost per lead is the number vendors put on invoices and dashboards. Cost per case is the number that determines whether your marketing budget is working. The two almost never tell the same story.

Below is a breakdown of the actual economics — what shared and exclusive leads cost at the case level, what drives the difference, and how to build the comparison that answers the question for your specific firm.

What “Shared” and “Exclusive” Actually Mean

Shared leads come from aggregator networks — platforms like Nolo, LegalMatch, AllLaw, or FindLaw — where a single inquiry gets sold to multiple firms at once. You might be one of four, six, or eight firms that receive the same lead the moment it comes in. The prospect did not choose you. They filled out a form, and your firm was on the distribution list.

Exclusive leads go to one firm only. Self-generated leads — from your Google Ads campaigns, Google Local Services Ads, or direct web traffic — are exclusive by nature: the prospect came to your site and contacted you directly. Some vendors also sell exclusive packages where they generate leads through their own advertising and route each one to a single buyer.

Simple in concept. Significant in consequence — for conversion rates, intake workload, and ultimately cost per case.

The CPL Comparison That Misleads Most Marketing Directors

Here is what the numbers look like when PI firms compare these lead types on the metric most vendors put in front of them:

On CPL alone, shared leads win easily. If that is the metric guiding your vendor allocation, you will keep spending on aggregators — and keep wondering why signed case numbers do not reflect the lead volume you are buying.

The problem is conversion rate. Shared leads convert to signed cases at 3–8%. Exclusive leads — whether self-generated or vendor-sourced — convert at 12–25%. That gap flips the cost per case calculation entirely.

What the Cost Per Case Numbers Actually Look Like

Follow leads through intake to signed cases and the ranking by source shifts dramatically. Here are benchmark ranges for cost per signed case across PI firms with complete attribution data:

A few patterns stand out. Google LSA — which most firms treat as a secondary channel — posts the lowest cost per signed case in this benchmark. Shared aggregators, despite the low CPL, land near the middle. Exclusive digital vendors cost more per case than self-generated Google Ads traffic. And Facebook, routinely praised for low CPL, ranks near the bottom.

These are averages. Your numbers will differ based on intake team performance, market, and case mix. Your actual cost per case from each source is the only figure that matters — not what other firms average.

Head-to-Head: Shared vs. Exclusive Across What Actually Matters

Cost per case is the headline number, but it is not the only dimension that determines which model fits your firm. Here is the full comparison:

One line in that table deserves extra attention: speed to contact. With shared leads, every firm on the distribution list is calling the same prospect at the same time. Intake teams that cannot reach a shared lead within five minutes lose a meaningful percentage of opportunities regardless of case quality. Exclusive leads give you more runway — but not unlimited runway. Speed still matters.

The Variable That Determines Which Model Wins for Your Firm

Most firms skip this part: your intake team's conversion rate on shared leads is the single most important variable in this comparison.

If your team converts shared leads at 10% — above the industry average — aggregators can still deliver competitive cost per case even at $55 CPL. If your team converts at 4%, your cost per case from aggregators is almost certainly higher than exclusive sources. You just cannot see it without connected attribution data.

The “shared leads are cheaper” assumption often goes untested for years. CPL is visible on every invoice. Cost per case by source requires linking each lead through intake to a signed case — and back to the vendor that delivered it.

Over 80% of PI firms still track marketing ROI in spreadsheets, if at all. The firms doing it systematically find meaningful differences between vendor types that are entirely invisible at the CPL level.

How to Build the Comparison for Your Firm

The math is simple once the data is connected. For each lead source, you need four numbers:

• Total spend in the period— from invoices or your vendor portal
• Total leads received— from the vendor report or your intake CRM
• Signed cases attributable to that source— from your CRM with source tags intact through signing
• Cost per case— total spend divided by signed cases

Use a 90-day window. Shorter periods introduce too much noise. Longer windows can obscure recent performance shifts.

Attribution is where most firms hit a wall. If your intake CRM does not capture lead source on each record — or if source tags fall off when records transfer between systems — the calculation breaks down. A dedicated lead source field that follows the record from intake submission through signing is the minimum requirement.

The RevenueScale marketing ROI platform automates this by connecting vendor spend data, intake records, and your case management system — so you see cost per case by source in one view, not assembled from three separate exports.

What Firms Usually Find When They Run the Numbers

Firms that track cost per case by source for the first time usually land in one of three situations:

Pattern 1: Shared aggregators are underperforming.The low CPL does not survive the conversion math. Cost per case from aggregators runs 30–60% higher than self-generated Google leads. The firm has been over-allocating budget to aggregators based on invoice totals, not case outcomes.

Pattern 2: One aggregator is the outlier.The firm uses three shared aggregators. Two deliver acceptable cost per case. One runs two to three times higher. Treating aggregators as a single category masked a vendor-level problem. The fix is not to cut aggregators — it is to cut the underperformer.

Pattern 3: Self-generated traffic is the best performer. Google Ads or LSA — despite higher CPL — delivers the lowest cost per case in the portfolio. The firm has been under-investing in its own channels while prioritizing vendors, when the data says the opposite allocation produces more cases per dollar.

All three are actionable. None are visible until you connect spend to signed cases by source — not just by lead delivered.

The Right Question to Be Asking

The shared vs. exclusive debate is a CPL debate pretending to be a strategy debate. The right question is not “which model is cheaper per lead?” It is “which sources deliver the lowest cost per signed case — and how do I scale those while pulling back from the ones that do not?”

That question needs connected data. It cannot be answered from a vendor invoice, a CPL dashboard, or a spreadsheet that tracks leads but stops before signed cases.

If you are making this allocation decision based on CPL today, you are likely leaving 15–20% of your marketing ROI on the table. Not by spending more — by reallocating what you already spend to the sources that deliver the best case economics for your specific intake team, market, and case mix.

See how the RevenueScale intake performance layer connects intake conversion rates by source — so your cost-per-case comparison reflects how your team actually converts each lead type, not just what the leads cost to acquire.

Ready to Run the Real Comparison?

If you have been managing shared and exclusive lead budgets by CPL, the cost-per-case view will change how you allocate. Book a demo to see how RevenueScale connects your vendor spend, intake records, and signed case data — so you know within 90 days which sources are actually working.