with subscription based models, where clients are billed on a monthly basis, how do i make this happen on my site ?
so a client signs up, and is taken to paypal or google checkout , and they are now billed monthly ?
what if you have different subscription models ?
like professional, corporate, enterprise.
pro would cost like 100 per month corp would cost like 300 per month enterprise would cost like 1000 per month.
how to deal with clients changing back and forth from each subscription model.