I work at the Rancho Penasquitos store in California. According to my manager, as of tonight the price drop goes district-wide, so Im assuming other districts will do the same. We only had one copy of XBox in stock, and I snatched it up the second I was done changing the price in the computer.
I don't know if the price grabber rebate works with items purchased online, but Starwars Battlefront qualifies for the $5 rebate after writing a review, so you save a few more bucks.