Forum Moderators: LifeinAsia
You should find pages from people who are offering ads on their sites. What you are trying to determine is the CPM for those ads.
Also, consider that something like adsense will bring in an ecpm of perhaps somewhere between 2 and 10. In other words, anwywere from $2 to $10 per thousand ad impressions.
The best way of doing things would be to have an ad rotator or ad management software that will count impressions for you.
Hopefully, some other people can give you some more specific info.
Also, I would go over to the GOOGLE SEARCH forum here and look for the thread on google, nofollow and paid links. It appears that google is going on a witch hunt for paid links.
cg