The Joomla Menu Add-in is based on the 'per domain' licensing of the Server-Side Menus API Add-in, as this offers the necessary "database/programmable driven" functionality for your Joomla menus.
Menus created using the Server-Side Menus API Add-in use a 'per domain' licensing: they are functional only on specific domains that you allocate your API licenses to (for example: www.mysite.com).
However, you will have no 'per domain' constraints if you purchase before the following offer expires:
Special Offer! (expires Sep. 2012)
Since August 10, 2010, with the purchase of 1 AllWebMenus license you also get unlimited Server-Side Menus API licenses (unlimited domains/websites for Joomla/Drupal/Wordpress/etc.) for free!
To purchase a license: AllWebMenus order page
If you already purchased an AllWebMenus license prior to August 10, 2010, click here to login to your Likno User Area and purchase the "Unlimited Domains" license at $59.95 only.
Note: Both Add-ins are automatically installed when installing AllWebMenus Pro (since build #758, December 2008).