Usually advertising doesn't pay this way in terms of Internet advertising. It's usually an affiliate program in which customers are tracked using cookies or other means through your site to the advertisers site. When a purchase is made, then you are given a certain commission. Usually an amount of less than a percent in most cases. It really depends on the affiliate program though. They are'nt going to pay you to put up an ad on your page though. Look at this place for instance. Do you generate the kind of traffic this place does? Look at the method of support we use here.