I would like to know what is the minimum i can pay for a banner advertising. because i been looking at couple programs it seem a little expensive.
Are you looking for banner space on blogs, sites ? Its depends on how popular is the blog, where it will be shown, where it will be placed, Size. I am too selling ads space on my blogs, check thread started by me.
The minimum you can pay depends on how well you're monetizing you're site If you're getting $1 per visitors, you can afford to pay 50 cents - $1 CPC.
I've got an iPhone site http://iphoneglance.com I offer banner space ads starting for a little as $10 per month if you wanna try my site out PM me.