PayPal makes cashless payments simple and secure. To use it, you create a PayPal account once by entering your bank or credit card details - so you don't have to enter them every time you make a purchase. You then pay by entering your e-mail address and a password and receive a payment confirmation by e-mail. Your order will then be processed immediately.
If you return an ordered item, the corresponding value of the goods will be credited back to your PayPal account.