I'm looking at starting 5 boxing, I have purchased a computer and getting ready to set it up. But looking at this deal, I think I'd be better off just getting the WOW battle chest for 4 new accounts at $20 each. It contains the basic WOW and BC.

If I purchase the basic WOW accounts at $5, I still need to cost me another $20 each to get to the accounts to the BC level.
I'm I missing something?