I've developting a SaaS product and would like to charge my users a subscription charge, I'm considering a model with a monthly fee and a annual discount - but now my question is this. How do I charge the customers? Do I charge them for the period and then block access until they have paid again, or is it posible to have a automatic renewal solution set up?
I think I remember tuts+ doing auto renewals once, is that sort of thing legal?