B2B SaaS · PLG
The cheapest leads were the most expensive customers.
This marketing & margin audit surfaced $68k in recurring annual margin in a B2B SaaS business — evidenced, senior-reviewed, and delivered in 6 days.
The business
A product-led SaaS team had optimized hard on cost-per-lead and was genuinely proud of one high-volume channel that delivered leads more cheaply than anything else in the mix. Because the metric everyone watched was CPL, that channel looked like the clear winner and steadily earned a larger share of budget as the team leaned into what appeared to be its most efficient source.
What triggered the audit
Sales kept quietly complaining that the pipeline felt heavy, slow and hard to close, even as the marketing dashboard glowed. That mismatch between a great top-line metric and a struggling sales team is a classic warning sign, so the audit followed the cheap leads all the way through to closed revenue rather than stopping at the point of capture.
What the audit found
Judged on the full journey rather than the moment of lead capture, the cheapest channel was the most expensive one the company had. Those low-cost leads had by far the worst downstream close rate and the longest sales cycles, so each one consumed a disproportionate amount of scarce sales-team time before either dying or closing small. Once that sales cost was properly loaded onto them, the "cheap" leads were the most expensive customers the business acquired, while genuinely efficient channels — more costly per lead but far quicker and more likely to close — had been starved of budget precisely because CPL made them look worse. The company had been optimizing the wrong end of the funnel entirely.
What we changed
Reweighted spend toward channels with proven pipeline velocity and close rate, rather than the lowest headline cost per lead.
Gave the sales team a source-level lead score, so their limited time flows to the leads with the best real economics instead of being spread evenly.
Switched the core marketing target from cost-per-lead to cost-per-qualified-pipeline, aligning the metric with what the business actually needs.
Built a closed-loop report joining lead source to won revenue, so channel decisions are made on outcomes, not intake volume.
The result
Pipeline efficiency improved 31% by buying fewer, better leads. Any RevOps or growth leader knows this tension: the marketing dashboard glowed while sales quietly drowned in leads that wouldn’t close. If you optimize on cost-per-lead, your cheapest channel may be your most expensive customer once sales time is loaded in — and CPL will never reveal it. It ended a real sales-marketing rift too. A structured, closed-loop audit connects lead source to closed revenue in days, the view most teams simply never assemble for themselves.
From kickoff to signed-off findings: 6 days — inside our fixed 5–7 day window.
This +31% pipeline efficiency gain is ≈$68k/yr at the client’s revenue scale.