Your pissed about the price?
Im pissed about xbox users getting the dlc in the summer, while ps3 and pc users have to wait until the holidays.
You're overexaggerating.
My prediction is that Dawnguard is going to be released within a couple weeks of E3, at the latest. Bethesda doesn't wait very long to publish their expansions after they've revealed them. You'll probably be able to play it by the end of July in the worst case scenario. That's hardly the 'holidays.'
As for the topic of this thread; to the OP, you probably aren't very familiar with out Bethesda works the Elder Scrolls expansions. They're nothing like Fallout where the player only gets a couple hours of extra playtime -- those are worth the 800 MSP, unlike expansions like Shivering Isles.