graphicriver.net is a website that you can buy elements to include in your design work. For example, if you want to create a magazine, you can go to this website and search in the magazine section many different templates of magazines with different styles. If you like one magazine you can buy the InDesign document and replace the images and text with your own content.
This is a great option if you are not a graphic designer but you know how to use InDesign.
