Recently I started using ROAS bid strategies (target return on ad spend), and I wonder about your experience. I'm around 10 days into it.
What I saw so far was a decrease in bids for many ad groups and keywords to the point where they get zero impressions. Bids were set to as low as 3 cents.
While the math may look correct where the conversion is almost 300%, that does not do much if the CPC is so low that I get 2 conversions per campaign for the whole day. The same campaign was making 20 conversion prior this.
Not that I'm here to blame the feature, but to ask for some advice and have you share your experience.
Thanks