I don't know if anyone's posted this yet, I did a search but didn't find anything.
Twilight and Grievous are on half-price clearance at the Aneheim LEGO store. (not online)
I just bought the Twilight for $49 at the the Aneheim store yesterday. I already had Grievous so I didn't notice it's price. I believe it was half-price as well. I never had a desire to buy the Twilight but at that price for almost 900 peices, I couldn't pass it up.
Edit: Sorry, I didn't see the "finds/deals" thread at first look.