I know that if you buy a couple of tracks from an album on iTunes, you can 'complete your album' - but the rest of the tracks, minus the cost of what you've already spent, but is this the same for tv shows? I've already bought 3 out of 7 episodes of drawn together on iTunes, and i'd like to buy the rest, but the episodes are £1.89 each, the series it £10.89, so if i buy the series, i'll be out 6quid 