If you don't have a PayPal account, and do not want to set one up, when you get to the PayPal payment screen:
1) Select Pay with a credit or Visa Debit Card

2) Enter your email and select Continue to Payment

3) Enter your information and credit card details on the next screen. If you do NOT want to setup a PayPal account, deselect the 'Save info & create your PayPal account' option at the bottom of the page. Click Pay Now to finalize payment.

