Two ways of payment are available:
1- With PayPal:
PayPal is a service that allows you to instantly send money to anyone with an email address. PayPal is used by over 38 million members worldwide. PayPal is completely free to send money, and PayPal lets you charge the payment to either your credit card(Visa, MasterCard, iscover or American Express) or checking account.
It only takes about 5 minutes to create a PayPal account and use it to send money.
2- Credit Card
This service is provided by Paypal. You don't need to have a paypal account to use this service like any other credit card payment, it is very secure and easy to use.
At the payment method page, select the option 'credit card/paypal'. This will lead you to a page where you just have to click on 'secure checkout' under the 'Don't Have a PayPal Account?' header.
The site will then prompt to fill in your personal and credit card informations to make the payment.