So I've been playing the WoW F2P trial thing. It lets me play as much as I want up to level 20 and with the races from Burning Crusade etc. If I now want to start subscribing to play properly, what do I need to buy? Do I just upgrade to a full account and that's that? Or do I need to buy the game and the three expansions at retail? The Battle Chest thing?
Looking for definite answers, not 'I think you'd do this', please!