WoW World of Warcraft Subscribe
World of Warcraft will require you to pay a monthly fee; this cost is to pay for servers and staff which costs Blizzard a lot of money. There will be many ways to subscribe to World of Warcraft, mainly through different credit cards.
How large the fee will be has not yet been revealed but it is estimated that the subscription fee will be somewhere between 10-20 USD per month. There will most probably be discounts if you choose to pay for example a full year instead of per month.