Currently, Yola only accepts credit cards or payments via PayPal. If you don't have a credit card, you can use a debit card when you choose the PayPal option. Another alternative is to credit your PayPal account.
With regard to domain purchases, an alternative would be to find a local domain registrar or use a registrar that offers other payment methods. If you do decide to do that, then you'll need to point your domain to Yola by following the steps in this tutorial: Publish to a domain you already own.