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well i would but me cousin lives aways away
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This is why we invented the postal system

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but ur saying if i buy bc i have to play bc???
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No matter whether you own TBC or not, it will still patch to the current version (2.2.0 at the moment). You won't be able to access the additional TBC content but your client version still has to match because a lot of the changes in the patches since TBC have launched are changes that apply to the old lands, quests, items, and to class abilities and talents in general.
In short, you can buy original 'plain' WoW and play that fine without TBC but you'll still have to patch up to 2.2.0. At a rough estimate you're looking at around 600MB download I think (should fit on a CD fine).