Change in Sales Game of the Day (9/12) - Metal Gear Solid 4

[09tarheel]

This thread is doing pretty well comment wise compared to the two previous Game of the Day threads, but the poll doesn't have that many votes yet. Probably because the poll wasn't working for the first few hours, but still I would like to get some more votes in before the poll expires later.

Does anybody have any thoughts about the role bundles played in MGS4's sales? I think I remember, that the sales of the game after the first month or so, really seemed to depend on the availability of the bundles. Why do you think that was, and how much do you think bundles effected the sales?