This is one of the easiest affiliate programs to join. With just a scroll down the home page, you would find an affiliate link and once clicked you would be redirected to fill the application form. With eBay, you can sell products which are no longer of use to you and you can sell new products as well. Directing people to buy products from you if you have a website where you promote the products earns you a huge commission. Marketers get many sales during seasonal periods because eBay offers a discount on many products which attracts more buyers.