Goffee71 writes "Importers, can you get a PS Vita from Japan to my door from the launch date of December 17 in time for Christmas? Sony has given the date, the prices, the pre-pay 3G plans and those all important games for the PSV launch." Link to Original Source
Computers are unreliable, but humans are even more unreliable.
Any system which depends on human reliability is unreliable.