Originally Posted by RebelR

you are best off putting up your own campaigns and setting tracking codes for each zone you want to sell, that would give you a good starting point as to what you will make from the zone yourself not selling it. Remember, that there are buyers out there that seriously optimize, and refine their ads to extract the maximum performance from each buy, something you may not have the time, or energy to spend on.

Option #2, find an advertiser you trust, give them a free test, and ask them what they would pay. Or there is option #3, turn it over to an ad agency who will be able to run a run of network campaign, and the should be able to track impressions, clicks etc.

If you have impression stats for the sites that each banner or ad placement will appear, you have a pretty good starting point. Remember that selling clicks relies on the advertisers having creatives that achieve a certain min CTR, and unless you are controlling the creatives that are sending the clicks, or have the time to monitor and make sure that high CTR creatives are being weighted more heavily, you may be better off selling CPM instead.