04-10-2007, 07:52 AM
Quote:Payment Models
There are essentially three categories of comparative shopping sites the cost-per-action model, the subscription-fee model and the free model. Each has its own advantages and disadvantages, but aside from a few glaring exceptions, you get what you pay for. Cost-per-action advertising has long been lauded as one of the most affordable ways to advertise and many e-store owners would agree.
Cost-per-action generally means a pay-per-click model in which you will be required to pay your determined bid price whenever somebody clicks a link from the comparison site to a page on your site. CPA is considered to be among the best forms of comparative site advertising because it ensures that you don't have to pay a cent unless the site nets you traffic. (Other models exist, such as cost per sale and cost per thousand visitors but are less commonly used.) Generally, you can expect to pay around 15 to 20 cents for most merchandise in a shopping site PPC-based set up, with items such as jewelry or computers costing around 50 cents to $1 per click...
full article: http://www.ecommerce-guide.com/solutions...hp/3670556