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.


Topic content Common Mistakes & Troubleshooting