We always want things cheaper. I bet if it was 300, you would have said you'll wait until they were 200! I'm not making fun of you, just human nature.
But, if you think it is too good to be true, and it turns out to be, then is a few hundred worth not having it? I see this a lot on the dune thread, and elsewhere "if it was 50 bucks cheaper....". It will be, but the question is, "is 50, 100, or in your case 300 bucks worth going without something you want for 6 months?". A personal decision, for sure.
I've just got to decide between this and the boxee box, maybe I'll get both and keep the best one (and sell second place here)