I was at my local EB about a week ago, and a customer asked the clerk if GameCubes were still coming with free disks full of the classic Zelda games. The clerk said that he didn't know, because they've been completely sold out of GameCubes since back in December (two months ago), when Nintendo launched that promotion, and everybody snapped them up.
Nintendo supposedly sold a cool million units in December (the entire amount that the XBox was leading by in North America). But they sold out halfway through the month. Then the XBox coasted along with two prime weeks of no competition (from the other "PS2 alternative"), and sold another million hardware units of their own in December.
I saw some January hardware numbers in another forum. So I have no way of knowing if they're real, but...
PS2: 338,000
GBA: 299,000
Xbox: 192,000
GCN: 131,000
Back down to last place in America, again. Because they're still sold out. Now that's just sad. Nintendo is going to completely kill off their "momentum" by the time they get their butts back in gear.
Sure, we can say that Nintendo had "no choice" but to cut their production because their warehouses were full, but Iwata himself has said that they made a mistake, in that the drop to $99 was a clear part of their plans even earlier, but after the lackluster price cuts of E3 they decided to "play it safe" and grab for some extra profit by just including the GBP with the GameCube instead of a price drop.
Nintendo has needed to "get serious" with the GameCube since day 1. They should've played hardball. Your competitors are showing a weakness? Maybe they're holding something back? So what? Use overkill. You've got a reputation to rebuild, and you need to impress people.
Also, if Nintendo knew they had a "plan A" (price cut) to fall back on, since "plan B" (the GBP instead of a game) wasn't working, why didn't they have a little more faith in themselves? Rent some more warehouse space. They should've known that there was a possible sales surge coming (although I suppose the GameCube up until now hasn't really inspired a lot of confidence).
Sure, it seems impressive to think that their warehouses were completely "full", and now they're completely "empty", but when it comes right down to it, their plan for this winter was only to "do as well as the XBox".
Edit: The MagixBox also has the same numbers I mentioned. They also have the total North American sales.
PS2 - 22,596,000
GBA - 20,248,000
XBox - 7,983,000
GCN - 6,996,000