You can pay by credit card online.  

Many people become confused at checkout when they want to pay by credit card and are presented with the Paypal option.

You do not have to have a Paypal Account to pay by credit card, simply proceed as follows:
 

Go to Checkout

Click on the Paypal and Credit/Debit Cards option

Click on ‘Dont have a Paypal Account?’ and complete your details

If you do have a Paypal account, at this point you will get the message:

Based on the information you gave us, we detected that you have an existing PayPal account on file.

You can still continue and pay with your Debit/Credit Card, by clicking the option:

Continue to pay as a guest and do not use my PayPal account