It is always worth testing ideas in Google ads, even with PMax. Based on past data, is this the best way to structure your campaigns?
Breaking out by ROAS can work and it can also leave money on the table. Sometimes data shows it might be more profitable to break out campaigns based on:
* Brand or Product Category
* Seasonality
* Bestsellers
* Cheapest (vs Expensive)
* Variants (for DTC brands)
* On Sale vs Not on Sale
* New vs Old
For SKUs that are not your strong performers, you want to make sure you can keep feeding data into your campaigns even in low season. You can have multiple of these campaign structures working in one ad account,… especially if SKU count is high and you are trying to dominate SERP too.