There are many websites actually do not have their own products but simply get products info from ebay or amazon, when you click buy it button on their website, the page will be forwarded to original source on ebay or amazon, of course, with afficiater id tracked.... I wonder how to do that, what's the basic requirement to build a website like this...
There is some script, plugins and tool that help to do that. A big number of people have affiliate accounts in ebay and amazon and they want to make some money by selling products through these sites. Therefore they design and develop such websites and redirect actual customer to source sites. Some people use email marketing to do this.
i think just the button URL link to the ebay and amazon . Because lot of people do not have their own payment gateway and delivery service so they would like to link it to ebay and amazon to help them up.
Wasn't that great?