there has to be a plug in for this

I looked at cranky ads, and what a rip off. 25% of your revenue to use their plug in and their billing. For 25% you can have a full service company selling the ads on your site.

So, I set up a merchant account to charge advertisers directly and was looking for a plug in that will display ads based upon views. For example, you pay $xx for xxxx views and may share the same advertising spot with other advertisers and this change occurs automatically. Who has one?

I have found in this particular niche I would do much better selling ads directly to the advertiser than using any network. So, now I am trying to make that happen.

I was also going to use zen cart for check out, anyone that wants to offer a better solution for billing advertisers please feel free to share.

Buy sell ads are a good way of getting good traffic, you've probably already tried them.

I looked at them and this niche is extremely focused, buy sell ads can't tough what I can get going straight to the advertisers. I actually never imagined what I could get until I stumbled across a competitors low ranking, low traffic site and made some inquiries to find out what he was getting for ads. Ridiculous prices for web advertising but then when I think about how much the advertisers are making for one deal ($20k is the average) suddenly what they are paying for these ads is chump change.

There are several plugins for buy sell ads but some of them are really expensive. The Simple Ads Manager is a free plugin from WordPress. It's misleading they call it simple as there are many options you can choose from when customizing on how you want your ads to show.