Its not available anywhere else. You pay $20 a year for Hyperspace and its worth it. Cmon only $20 dude thats cheap. And the ship raid is a fraction of what Hyperspace gets you. Theres the live web cam which is nice, video documentaries which will come soon, the set diaries, set photos, interviews, etc. Basically you get to see a making of Ep3 step by step. It probably has more stuff than the Ep3 dvd will have, plus you get to see it when its still being made.
May the Force be with you...