Restrict Content Pro Restriction Timeouts
This Professional add-on gives site administrators the ability to choose a date and time for when restricted content will have its limitations lifted, at which point it will be accessible to all users.
Do you want to offer early access to content for a fee while simultaneously making it available to the general public after a predetermined length of time has passed? That is exactly what you will be able to do with the help of this add-on.
Configuring restriction timeouts can be done on a per-page basis, or they can be done on a per-category or per-tag basis.