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Why we picked it A practitioner's honest read on where PMax actually delivers for ecommerce versus where founders overtrust the automation, including the margin-exclusion tactic that measurably lifts ROAS.
Performance Max for Ecommerce: What Actually Works in 2026
From Store Growers by Store Growers
- 60-80% of PMax spend should land on Shopping for a healthy account
- Excluding low-margin products can lift ROAS materially
- Signs your feed, not your bidding, is the real bottleneck
