We have about 9 weeks until Black Friday (from the current sales data Sept. 19th). From that point, the Christmas rush begins (at least in NA).
The PS3 sits at 24.55m units at the moment. Current trends suggest that the PS3 will level off around 200k a week until then. That would be 1.8m units sold (excluding any big releases that may shift hardware) until the week of Black Friday bring the total to around 26.35 million.
At that point, there will be 5 and a half weeks left in the year (including BF week). In order to reach 30 million units sold the PS3 would have to sell 3.65 million over those 5 and half weeks (around 660k per week).
Do you guys think it's possible?
I think it is.
EDIT: I of course, did not include the impact FFXIII may have on hardware. If that even makes a difference...
EDIT 2: A $400 did 400k the week of Black Friday in 2008.
Following weeks:
12/6/08: 365,049
12/13/08: 437,095
12/20/08: 525,092
12/27/08: 477,674
So, it would need roughly a 50% - 60% increase each week from last year.