Paid Per Sale ( PPSa ) is the oldest Affiliate Program in the world. This method is used in the real world & the net world cause this is the most profitable & most saving cost Affiliate Program. The Affiliate Merchant doesn`t need to pay the Affiliate Marketer if there is no sales happen through the Affiliate Link of the Affiliate Marketer.
Affiliate Link is usually consist of the URL of the registration page of the Affiliate Merchant, ended with the Affiliate ID of the Affiliate Marketer, to make sure that the sales is made from the Affiliate Marketer. So, this Affiliate Link is very important to Affiliate Marketer.
The example of goods that usually use this kind of Affiliate Program to increase its sales are eBook Sales & Software Sales. The commission of this kind of Affiliate Program is usually about 40% to 80% sales price.
For the Affiliate Merchant, I recommend to sell eBooks, which I call the Information Product. Selling the Information Product is the most profitable for Affiliate Merchant because there are no production cost like other products.
That`s why the commission is good. U can imagine if the eBook cost $ 97, U can get 50% which is $ 48.5. It`s nice commision right ?

