The 3x CPC Gap: Why the Same Google Ads Query Costs Wildly Different Amounts
On the same query, the weakest advertiser paid $2.95 per click while leaders paid under $1.11. Why CPC differs so much on identical demand, and what changed the economics.
Igor Ivitskiy's Google Ads Blog
The Campaign Graveyard: Where 75% of Demand Gen Budgets End Up
75% of Demand Gen spend sits in paused or removed campaigns, against 8.9% for Search. What that clutter signal means and how to test without the pile-up.