You can get the base game which includes:
World of Warcraft
World of Warcraft: The burning Crusade
World of Warcraft: Wrath of the Lich King
World of Warcraft: Cataclysm
World of Warcraft: Mists of Pandaria
For $4.99 You must login or register to view this content.
Warlords of Draenor (Current expansion) for $12.49 You must login or register to view this content.
Such a great deal, $12.49 for a level 90 boost and the DLC.
If you've thought of playing it, recommend getting it, great game especially for that price.