Originally Posted by Cherry7

I have read a book, and I did find it of interest. It does give good guidence on writing ads and getting good click through rates.... Of course, we track sales through both Google and CCBILL trackers...This helps but does not explain why Google wants to charge large amounts for obsure phrases....

Tracking helps but take a phrase like "indie erotic films" which is sort of what we do but it produces a click a week.... it will take several years to see if it converts given that we would give it 600 clicks to see if it made a sale....

Still the question bugs me why the high charges for obsure phrases?