We almost always opt-out of content. The content CTR does not figure into whether or not your ads will continue to display, just the CTR on Google.com matters.
Occassionally it seems content works but most of the time and the only thing that realy happens is that the number of clicks and associated costs go down and leads or sales stay about the same. This will definitely vary by industry though.
The issue I would have is the client not giving you any feedback on whether sales are better or (as I suspect) worse.
40% of the click costs will have to play havoc with the overall ROI, regardless of whether it made a jot of difference to CTR.
It's a common thing and it always seems to happen on Google where the impact of this sort of client behaviour is so dramatic.
We have a current new client asking us to turn the cost down over a 3-5 day period, when the current CPC is about as low as it can go. I think on day 2 we will be calling for the priest to read the account the last rites. One day they'll accept that you can't play with fire.
40% of the click through costs and 32% of the actual click throughs
This means you're paying more for content syndication than for search clicks?
That's not something I see very often at all, seems a bit backwards.
It seems if they still want to use content syndication, you can use the technique posted quite a bit lately of splitting your content and search bids into seperate campaigns to at least lower you content bids.
How do you mean by "cannot" give you specifics?
Get them to install the Google conversion tracking code. If they refuse to implement the code & refuse to give you some idea about the sales tracked through their in-house stats, then they aren't bothered about ROI.
To be effective, the PPC campaign manager should always know what's happening on the sales front.