Is Burning Crusade Classic Free?

How much will it cost? Like WoW Classic, Burning Crusade Classic is included in a World of Warcraft monthly subscription, which is $15. You won't have to pay anything extra—unless you want to buy a level boost or clone your character so it can keep playing on vanilla servers (explained below).

Is WoW Burning Crusade free to play?

Do I need to purchase Burning Crusade Classic to play it? No. Access to Burning Crusade Classic is included in and available to all players with an active World of Warcraft subscription—no additional purchase required.

Is TBC going to be free?

TBC will be free, it will come with the subscription, just like Classic. The boost will cost extra money.