I don't know where else to post this, so I'm going to post it here, if it needs to be moved that's ok.

I've bought the first to episodes of LOST season 5, I'm debating if I want to buy the season pass now, if I do will I still be charged for the first two episodes or will be it be like a complete my album thingy and only be charged for the ones that i haven't purchased yet?
thanks,