Yeah we got wifi, but ALL the non 4g ones at every store we called(within a 1 hour drive of our house) were sold out. Even most of the 4g ones were gone, only microcenter(really not a surprise) had even the 4g left.
I have a skydrive(edit: its a 25GB account) account, and I think google has its own thing for could back up. but yeah dropbox does sound like a good alternative.