CPA varies by channel and audience. B2B SaaS Google search ads typically run $50-200 CPA for a free-trial signup; Meta runs $100-400; LinkedIn $300-800 because the audience is more qualified. Display and YouTube vary widely with creative.
The biggest CPA lever is not the ad bid — it's the landing page conversion rate. Doubling LP conversion rate halves CPA at the same spend. Most teams try to optimize ad CPC before LP CVR; the math is upside-down. A 5% page lifted to 10% does more for CPA than any keyword bid tweak.
For attribution-heavy campaigns (multi-touch B2B journeys), modeled CPA is more honest than last-click CPA. A prospect who clicks display, then organic search, then a brand ad before signing up is over-attributed to brand in last-click and under-attributed everywhere else.
How Lytms scores it
Lytms scores the landing page that ad clicks land on — the highest-leverage variable in the CPA equation. A page in the top decile of the corpus converts at 2-3× the median rate, which cuts CPA proportionally on the same ad spend.
See also
See cost per acquisition on your own page.
One URL. About 2 minutes.