Why CPM matters
It’s the rent on the audience: every performance metric downstream, cost per click, per purchase, per customer, is built on what the thousand impressions cost going in. Rising CPMs are the quiet tax on the whole D2C model, and buyers watch them the way shippers watch fuel: not controllable, but priceable into everything.
Reading CPMs like a buyer
- Audience and season set the floorCompetitive segments and Q4 auctions cost more
- Creative earns discountsEngaging ads win auctions cheaper on most platforms
- CPM alone judges nothingCheap impressions that never convert are expensive
- Trend it per placementThe same budget buys shrinking reach as CPMs climb
Questions
Why do CPMs keep rising?
Auction math: more advertisers bidding on finite attention, especially in peak seasons and proven placements. The compounding answer isn’t cheaper impressions but better use of each one, creative, conversion, and retention doing more per thousand.
When does CPM buying beat CPC?
When you trust your creative’s math: CPM pays for exposure and keeps the click upside, rewarding ads that outperform the auction’s expectations; CPC transfers click risk to the platform at a markup. High-performing creative usually nets cheaper on CPM.