I was wondering if anyone has any information on about how much it costs to advertise via banners (CPM model) for the entertainment category. Is there a Web site that lists the approximate cost for various sites (fastclick, casalemedia, myspace.com, etc). I have looked on the sites and it is not public information.

Sites I have found so far:

CPXInteractive.com charges about $0.40-$0.50 per thousand impressions