How long after putting up an ad and running it does it take for the cpc to reach a consistent low cpc in your experience? Mine has been running for a day now and it’s been fluctuating between .35 and .45 cpc. Is this the average cpc I’ll have for this ad since it’s already been running for a day or will the cpc keep decreasing if I keep it running? How many days should I leave it running before making a decision to keep it running or to turn it off?