For $10 daily, for how many days should I run an ad set to know if its a good product or not. Do I need more than 3 days?
And if i after spending just $10 my CPM was too high and my CTR was too low do you think I still should continue the testing period till the end or its cleat from day 1 that its a bad product/targeting?
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So the strategy I've used which works is the following: