I went to my local Best Buy today, and they didn't even have any copies of GR, or CoX at all. I asked them about it, and they said they would be getting them. So, no I don't think that deal should end today.
-Largo
Founder of A.G.O.N.Y. Supergroup on Victory
Member of Thought Sanctum VG on Victory
Member of St0rm Batallion SG on Guardian
The deal was just a one week deal, printed in your Sunday newspaper. Unless it is in this week's paper too, you've missed out. Sorry.
Champion 50s (blueside): Marc Bridge, Nicole Bridge, Fred Blaze, Colleen Storms, Sun's Chariot, Moon's Huntress, Point of Pride
Guardian 50s (redside): Connie Mand
AE arc: Spirit Plane Invasion, #29282, @Honbrid
Ah well. I win some, I lose some.
Yet in this case, I still ended up winning some. It turned out that Best Buy had (has) another deal I did not know about until now. When I went to purchase my copies, I found out that purchasing 2 PC games earns you a $25 Best Buy Gift Card. So that will come in handy soon I'm sure. 
Looks like I learned a little too late about that $10 off special Best Buy was having for Going Rogue. Saw it on BB's site late last night and figured I would get it today (2 copies since there are 2 players here).
Sadly, when I saw the listing on BB's site, there was nothing stating that the offer would no longer be valid as of today.
So anyway, are there any other retailers that are doing a similar deal, or are likely to be doing so soon?