Yes, we now accept payments! How exciting.
You can schedule up to one post per week is free, forever.
If you need more than that, you can post up to one post per day for $8 per month.
If you need even more sweet sweet karma, unlimited access is just $20 per month.
All other features are common to all users. Remember, you have to be subscribed when you schedule the post, and when the post is set to go.
Limits are applied to the final posting time. You can create as many posts at once as you like, as long as you schedule them to be posted at least a week apart (on the free account).
You can upgrade your subscription on the Account Settings page.