Identify Which Cost Is Too High
Different cost problems require different solutions.
Start by identifying which metric is causing concern.
CPC (Cost Per Click)
Questions:
- Are clicks becoming more expensive?
- Is traffic volume declining as CPC rises?
Potential causes:
- increased competition
- low ad relevance
- broad targeting
- aggressive bidding
CPA (Cost Per Acquisition)
Questions:
- Are conversions becoming more expensive?
- Has conversion rate changed?
Potential causes:
- weaker traffic quality
- landing page issues
- lower conversion intent
- tracking problems
COS (Cost of Sale)
Questions:
- Are sales becoming less profitable?
- Has revenue changed relative to advertising spend?
Potential causes:
- lower average order value
- product mix changes
- weaker conversion efficiency
- increasing competition
Budget Consumption
Questions:
- Is budget running out too quickly?
- Is one campaign consuming a disproportionate share of spend?
Potential causes:
- insufficient segmentation
- broad targeting
- high-volume keywords
- dominant audiences
When CPC Is Too High
Higher CPC usually means one of two things:
- Competition has increased.
- The system believes other advertisers offer more relevant ads for the same audience.
Before reducing bids, review:
Ad Relevance
Ask:
- Does the ad closely match user intent?
- Is the keyword reflected in the ad copy?
- Is the message specific and compelling?
Higher relevance often improves performance without requiring higher bids.
Targeting Precision
Broad targeting can increase costs while reducing efficiency.
Review:
- keywords
- audiences
- placements
- product groups
Sometimes narrowing the target audience improves both CPC and conversion quality.
Campaign Structure
Poorly structured campaigns often hide optimization opportunities.
Examples:
- too many keywords in one ad group
- mixed campaign objectives
- generic ad messaging
A cleaner structure typically improves relevance and performance over time.