30 day one time sub

I noticed that you do continuous subscriptions, and require a credit card or debit card to make a sub. This wouldn't be a problem for people with one, but for disabled people like me who are not allowed to own a credit or debit card, it makes it really difficult to get a subscription. Even paypal purchase requires a debit or credit card on file. What gives? Really wish I could get PRO without a debit or credit.