I have very high CPC keywords that I want to use for Google AdWords. I don't think I want to spend a lot of money on CPC if I have to literally buy a $1,000 worth of them just to get a few conversions, the ROI just isn't there. Does anybody have any experience on an average conversion rate of a site with a decent landing page. I know this is a broad question with a lot of variables but I'm curious if I should start throwing money at this.