Impressions per Dollar

Definition

A metric for evaluating ad efficiency by comparing impressions to spend. It's basically asking: how much did I pay to be ignored?

Example Usage

Our CPM dropped but impressions per dollar stayed flat, which means we're paying less but reaching the same people.

Origin

Advertising cost efficiency metrics

Fun Fact

Impressions per dollar varies dramatically by platform and audience—you'll pay way more for luxury fashion ads targeting affluent women than for budget fitness content.

Source: Digital advertising metrics

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