I bit and ordered from Dell. I payed $15 for 3-5 day shipping. Mine will be delivered by 12-4-2012. Total was $503 after tax and shipping.
I honesty feel better knowing that I will get one now, even if it will take two and a half weeks.
I did this as well, but shipping was free for me. You might want to see what the deal is. Also, I'm on the phone with a rep and he told me even though it says dec-4 and is processing, it's actually already in pre-shipping status and should get here next week before Thanksgiving.
Not sure if it makes a difference, but I ordered over the phone and have an account with them.
EDIT -- Regarding the Wii shortage. I managed a local Gamestop when the Wii came out and we would sell out every single day we received any stock of Wii systems. On weeks that corporate was dumb enough to run an ad advertising the Wii, due to federal laws, we were required to hold onto a system. Because I didn't want people to get even more pissed, when I knew an ad was coming, we held all the systems shipped to us that week so we had at least 5-10 for that coming Sunday. Of course, they all sold that day, but we did the best we could despite the lack of systems and terrible corporate advertising.