On Twoo we offer many different packages of our products. You can choose the length of the package you'd like to purchase as well as the payment method you want to use. The average price of a month of Premium is usually lower in longer packages. Please visit www.twoo.com/premium to see all of the packages and payment methods that we offer at the moment. We often offer our users promotions to give them a chance to purchase our products for a reduced price. If you experience any issues with upgrading or have any other questions about the process of payment please contact us at info-en@twoo.com.