You can pay for your ticket by card on the seller’s website. Your ticket will be emailed to the address you specified in the booking form within 3 hours after payment. If you don’t receive it, check your Spam folder and make sure there were no mistakes in the email address. If you still can’t find it, read the article: I didn’t receive my ticket. What should I do?
Some airlines charge an additional fee for passenger check‑in and ticket printing at the check‑in desk. If you don’t want to overpay, check the airlines’ rules before departure.