Actual retargeting (= targeting a previous visitor/buyer of your product) works, and in some cases works very well. Reactivating a customer vs acquiring a new c

Actual retargeting (= targeting a previous visitor/buyer of your product) works, and in some cases works very well. Reactivating a customer vs acquiring a new customer can be up to 10x cheaper, depending on how well you do it. And if you know how to do that, then you can have a much higher initial CAC, which is often the hardest thing to optimize.