You may select PayPal as a payment method during checkout. By clicking on "Submit Your Order" at the final step of your payment process, you will be taken to a PayPal login page, where you can access your account and complete your purchase. If you do not have a PayPal account yet, you can create one from the PayPal login page, before concluding your order.
You can pay also offline with the usual money transfer via bank transfer.
Further payment methods are Giropay and Klarna.
You can pay by CreditCard (VISA, MasterCard etc.) as well. Please follow the payment instructions.