Hi,
I'm buying traffic on exo from different (9 premium sites) sources. I'd like to know what is the average number of clicks I should spend on each source to find out whether I should blacklist it or not. For instance, the average CTR of my LP is around 30%. A few examples:
Source 1: 28/11/2 (CTR 40%, CR 19%)
Source2: 40/4/0 (CTR 10%, CR 0%)
Is 40 clicks enough to disable Source2?