Prime properties such as wired make really good money on their visitors. The 'average website' makes rather a lot less than that (hence the existence of supply side optimizers).
The online version of the media kit for the wired property:
Has premium display sitting at about $10 CPM and that's not a bad number compared to what I know about this field, the actual rate for a property such as wired would be a little higher than that (-15% agency fees), but not by much so that's a good starting point.