A CPL number means nothing on its own. Here's how to figure out what you can actually afford to pay, and why two businesses with the same CPL can have very different results.
Ask "what's a good cost per lead" and you'll get wildly different answers depending on who you ask — because the number is meaningless without two other numbers next to it: your close rate and your average deal value.
The math that actually matters
A $200 CPL sounds expensive until you learn the close rate is 40% and the average deal is worth $5,000 — that's a $500 cost to acquire a $5,000 customer, which is a great trade. A $20 CPL sounds cheap until you learn only 1 in 50 leads closes and the average deal is $100. Judge CPL against customer value and close rate, never in isolation.
Why CPL varies so much by industry
B2B IT services often run $50–$200+ per lead because the deal sizes are large and the buyer pool is narrow. Local service businesses tend to sit at $20–$100 because the audience is bigger and the purchase decision is simpler. Jewelry and other considered-purchase retail often falls in the $30–$150 range. None of these numbers are fixed — they shift with competition, season, and how tightly you can target.
Use CPL to compare campaigns, not platforms
CPL is most useful for comparing one campaign against itself over time, or against another campaign targeting the same audience — did this week's creative beat last week's? Did switching the targeting improve or hurt results? Comparing your CPL against someone else's business, in a different industry, with a different offer, tells you very little.
Treat early numbers as estimates
Any CPL figure you see quoted — including the ones we publish — is a planning estimate to set expectations before you spend, not a guarantee. Real numbers only emerge after a campaign has run long enough to collect meaningful data, typically a few weeks at minimum.
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