I'm getting somewhere in the 200s.
In the first pick on the top there are two rows of 7.
Underneath that, there are 9 wii's laying on their side.
Then underneath that, there is one row of 8 (The 8 red stickers on the side of the box), then two rows of nine, so that's 26. So far we're at 42. Then there are nine rows of nine or ten wii's laying horizontally. I'll give Mike B the benefit of the doubt and say ten. So that's 90 + 42, so in the first pic, approximately 132 Wiis.
Then in the second pic, there is 1 on top, then nine laying horizontally below it, so that's ten.
Then below it, there are ten Wii's, then nine, then ten. So that's 29
So altogether that's 39 added to that. So that is 171 Wiis.
Then in the third pic, there are five rows of Wii's with four in each row, which is twenty. and then five visible on top, which is 25. so the tab is now 196 Wiis
And the last pic has seven rows of Wii's. Assuming that there are four in each row like the picture above it, that means that there are 28 Wii's there. But there are six rows of Wii's stacked above it. Assuming that they have four in each row, we're at 24. So that's 52 added to 196 for a grand total of 248 (approx) Wii's.
Add that to the many that probably sold between the time he posted it, and went back and got pics, we're looking at something dangerously close to the 300 he said.