When confirming your order, you will be redirected to the PayPal website, where you need to login. The payment related data are managed directly from PayPal. If you do not own a PayPal account, it is possible to use your own card data (ether credit, debit or prepaid card work).
The debit on your account will be charged simultaneously with the order. If the products you have ordered are no longer available, you will receive the money back on your bank account.