Apart from the two required plugins, Avada Core and Avada Builder, the Avada Website Builder also includes six other bundled, premium plugins. They are completely optional, but are very useful, and are required for the full import of some of the prebuilt websites. They are Avada Custom Branding, Slider Revolution, LayerSlider WP, Advanced Custom Fields PRO, Convert Plus, and FileBird Pro.
These premium plugins are worth over $200, and come bundled for free with Avada, and do not require additional licensing to use. But before you can install the bundled plugins, you must first register your purchase.
If so required, each of these plugins can also be downloaded from the Downloads page (found under Support > Downloads) on My Avada.
Many themes sold on ThemeForest come bundled with premium plugins from CodeCanyon. A plugin offers additional functionality and features beyond a typical WordPress installation, and you do not need additional licensing in order to use the plugin with your theme. Support for the plugins however will come from ThemeFusion, and not the plugin author. The terms and conditions for bundled plugins are set out by Envato.