This filter allows you to adjust the results of checking if a given post is set for sale using the Sell Content add-on. This only checks if the post is set for sale based on your settings. It does not check if a user has paid for the content!
Returns TRUE if the post is for sale or FALSE.
The post object being checked.
The Sell Content add-on settings array.
Example 1: Set all content for sale that are authored by the user with the ID 123.