https://signup.worldofwarcraft.com/paymentmethod.html
Choose from the payment methods below. You must select a payment method to create a World of Warcraft "Guest Pass" account. Should you decide to upgrade your account from "Guest Pass" status to retail status, the payment method you select will automatically be initiated to ensure a seamless World of Warcraft play experience. Details on how to upgrade your "Guest Pass" account will be provided at the end of the Account Creation process. If you experience any problems or have questions/concerns about this page, please contact our billing and account services by email (billing@blizzard.com) or via phone (1-800-59-BLIZZARD).
You then have 4 payment options (Visa, Mastercard, Discover, American Express) and you have the Game Card Option, which is the one I want.
When I press continue I'm brought to this page.
https://signup.worldofwarcraft.com/gamecard.html
The World of Warcraft 60 Day Pre-Paid Game Card is a convenient payment option for those who prefer to pay cash for their World of Warcraft subscription and is available at most stores where computer games are sold. The other option to enter the World of Warcraft without a credit card is Paypal, which is accepted directly by Blizzard.
IMPORTANT - Before you scratch off your Game Card please read the following:
As soon as you scratch off the grey strip on the back of your Pre-Paid Game Card, the card is considered "spent." While your card will not be activated until you input the code into the field below, the card cannot be returned after it has been scratched. With the other payment methods, you have the option of canceling your World of Warcraft account before your first free month of game time is up. You are thus under no obligation with the other payment methods to pay for a second month of World of Warcraft. However, please note that this is not the case if you select a Pre-Paid Game Card as your payment method.When you purchase a Pre-Paid Game Card, you are paying upfront for an additional preset amount of game time beyond your first free month. Although you can cancel your account before your free month is up, you will not be entitled to a refund for the Pre-Paid Game Card. If you experience any problems or have questions/concerns about this page, please contact our billing and account services by email (billing@blizzard.com) or via phone (1-800-59-BLIZZARD).
Which then requires me to supply them with an existing Pre-Paid Game Card code. Which of course I don't have right now since the "FIRST MONTH OF PLAY (is) INCLUDED".