Is there a way to manipulate how much the recurring billing charge is that the paypal addon automatically tries to collect (at the end of the stated billing cycle)?
I have a membership driven site using the user registration and paypal addons and justin tadlock's members plugin. This works fine. I also want to be able to offer my members the ability to upgrade their membership to a different level, therefore charging a different (higher) recurring cost at the end of their subscription term.
Is this possible?