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Question about CSS CPC reduction
Hi! I find it very difficult to prove to my clients that the 20-25% CPC reduction expected from activating CSS is actually being reached.
Have you guys found a way of proving this? I think the test environment for proving this has to be very sterile, because CPC can be affected by a lot of things:
\- General economical changes
\- Competitor activities
\- Campaign optimisation
\- Campaign mix
\- Change in bidding strategies
\- Change in advertised Shopping product mix (especially in automated shopping, like Pmax)
And the list goes on and on…
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