How to Setup Membership on WP Network – like WordPress.com

Hi all. I’ve got several premium social media plugins I’ve developed, and they’re doing pretty well. However, some users may not have the technical ability to do all the setup required – a WordPress site, secure certificates, etc.

So with that in mind, I’d like to set up a site where I can host the users’ pages for a small monthly fee. I’ve already got a test WP network setup, and I’ve tested signing up for a blog, activating plugins, etc.

What I need to do though, is figure out how to turn the standard signup into a payment page where they go through PayPal first, then can sign up for a hosted blog.

On top of that, I’d need a payment page for any additional sites the user may create.

So my question is, anybody do this before, and how do you set this up? Thanks!