I tried to get one yesterday at various online retailers: Amazon, Gamestop & Target. Couldn't add to the cart or check out and their sites were slow or crashing. I definitely wasn't going to physically go to a store or wait in line for this since I'm not in a hurry to get one.
I've read that some people that went into certain stores yesterday morning were able to buy multiple systems where they didn't even enforce a buying limit. The flipping and scalping is going to make it hard to get one this holiday season even if stores get more in stock. Wait a few month after the hype dies and I'm sure these will be easy to get.