WP W3D aims to help WP users or developers to add easily several UI elements to their website, including 3D components and complex animated layouts.
Yes, this plugin is completely free. In a near future, if you want extra features and support, you will be able to purchase a premium version and download at http://wordpress.mba-multimedia.com/plugins/wp-w3d-plugin/
An UI element showing dynamic content will retreive data from the database. A static content is packaged into a file.