title: Send users to a pre-filled Amazon cart checkout
body: <p>I'm working on a site that will create pre-set packages of items. To start, I'm using Amazon to test the idea, pulling some affiliate sales, and then I'll fulfill orders myself if the idea deems successful. </p>
  
  <p>My goal is to have a "buy now" type button, and upon clicking, the user will arrive at an Amazon checkout now page, with a cart pre-filled with items of my choosing, and my affiliate number.</p>
  
  <p>I'm a PHP developer, so if a solution must be language specific, that's the language to go with. If it's more of a conceptual answer, or if there's an API for this, that works too. </p>
  
  <p>Thanks in advance.</p>