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I’d start with a straightforward Shopping campaign for the first 30 days. With 100 SKUs and no data, you need to see which products actually sell. Pmax is too much of a black box when you don’t know your winners yet. Put the full $100 into Standard Shopping. This gives you clean data on search query intent and product performance. Once you have that foundation, you can layer in search or test Pmax with your best-sellers.
