Ok so I just started a new campaign on a product that has a gravity of 2.6 and I am using yahoo adwords. I am paying roughly 23 cents a click and I was on top of the first page with fairly relevant keywords. So I lowered the cost to 15 cents and that lowered me 5 spots but big woop I see my ad sooner then if I was on the top. But thats besides the point. So how many clicks should I go with a product that has a gravity of 2.6 before I give up and move on ?