These 2 bits of info contradict each other, but here goes.
FYI 1:
Last week, the average selling price on eBay for a Xbox 360 was $567.
This week, the average selling price on eBay for a Xbox 360 is $556.
If you're going to hoard and attempt to resell for a profit on eBay, please use fixed price listings. Everybody (OK, 99%) using an auction style listing is going to lose their asses.
I'm almost glad my preorder was bumped from the release date batch.
FYI 2:
According to the Game Crazy manager I talk to everyday, Game Crazy ordered (and paid for) 33,000 360s. M$ is only supplying 9,000 on launch date. So, there is going to be some measure of a shortage.