I’m looking at the performance of site link extensions across my accounts and seeing that overwhelmingly they have much high CPAs than headline clicks.
Should I turn these off or are there repercussions I’m not considering?
depends on where they’re pointing to, what the CTA on each sitelink is, and their relevance to the keywords in your group/campaign – id make sure there isn’t a mismatch on all of those first, because sitelinks give you more pixel space on the serp and boost QS