CM Pay Per Post (CMPPP) - How To - Assign a Post to a Price/Subscription (Video)
Assigning a Post to a Price Group/Subscription
In order to include a post, page or other content in a pricing group, edit and head to the CM Pay Per Posts: Pricing meta box highlighted below:
Note: The name will include "Micropayments" or "Easy Digital Downloads" depending on the chosen payment plugin.
Now, when managing subscriptions, the content will be listed, as in the example below: