The number that fools everyone
Cost per lead is easy to read and easy to brag about. But when you sell homes, cars or anything people think hard about, a cheap lead that never picks up the phone costs more than its price. It costs your sales team’s time, and their faith in marketing.
The two numbers we watch instead
- Lead invalid rate — the share of leads that turn out to be fake, unreachable or clearly not buyers. If this climbs, a cheaper cost per lead means nothing.
- Total valid leads — how many real conversations the ads start each month.
Then we follow those leads to the end: how many closed, and for how much. That gives the two numbers a business actually feels. Return on ad spend (ROAS) is revenue divided by ad spend. Return on investment (ROI) compares the profit with everything spent.
How it played out for one of our clients
One of our clients had no social media presence when we started. We built its channels, ran Meta video ads featuring its own team, and judged every ad on lead quality rather than cost per lead. Every month we reviewed the funnel from first click to closed sale, cut what wasn’t working, and moved budget to what was.
From May to September 2026, that produced six-figure closed revenue, a 14x return on ad spend and a 1,392% return on investment. Read the case.
What to do with your own ads
- Get lead status back from sales. Even a simple sheet — called, qualified, closed — changes everything.
- Ask one qualifying question on your lead form. Fewer leads, better leads.
- Review monthly, not daily. High-ticket sales take weeks. We call our review the Monthly Pivot.
- Refresh creative before it tires. Lead quality usually drops before the cost does.