$30 is a great deal if the license covers a single commercial app (I assume you need to buy it each time you use it in an app?) but when do you need to pay for the "Extended License" which is $1500?
From my cursory reading of the licensing, the key difference is that the Extended License allows you to distribute the theme with your app (the regular license would be limited to a hosted app).
http://themeforest.net/item/freemium-saas-wordpress-cms-blog...
$30 is a great deal if the license covers a single commercial app (I assume you need to buy it each time you use it in an app?) but when do you need to pay for the "Extended License" which is $1500?