You do not need to have a PayPal account in order to place an order. PayPal allows you to checkout as a "guest", which will allow you to pay by credit or debit card, without having to create a PayPal account. When you select "checkout" from the shopping cart, your order summary will be displayed (see below). 

Paypal order screen

If you have a PayPal account, simply log in using your account information. If you do not have a PayPal account (or do not wish to use it for this order), select the "Don't have a PayPal account?" option highlighted in the above image (click the image to enlarge it). You can then check out using your debit or credit card.

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