I got it several times trying to order a Rose Gold for my wife on my iPad. Switched over to the MacBook and ordered from there. Delivers 9/25 confirmation at :41
I tried doing Next. Then I got this message. I was tired, checked my bank balance, saw I can comfortably afford full retail, and bought my phone outright.
Got that message on both iPads and my phone for about an hour of trying.. was about to give up. Then gave the mac a shot and the page loaded and went right through.. good times