When COS Is Too High
COS is one of the most important profitability indicators for e-commerce advertisers.
A rising COS means advertising costs are growing faster than revenue.
This can happen even when conversion volume remains stable.
Review Product-Level Performance
Not all products contribute equally.
Look for:
- products with high spend and low revenue
- low-margin products
- products with declining demand
Sometimes a small number of products drive most inefficiencies.
Review Feed Quality
In Product campaigns, feed quality directly influences visibility and click quality.
Review:
- product titles
- images
- categorization
- availability
- pricing accuracy
Better feed quality often improves efficiency without requiring additional spend.
Review Pricing Competitiveness
Advertising can attract visitors.
It cannot guarantee purchases if competitors offer:
- lower prices
- faster shipping
- stronger promotions
Always evaluate campaign performance within market context.