Duty Free Price is $458 but if you're not travelling overseas then it's $503.80
They're having a sale on their cameras at the moment but don't know when it will end. This sale price might be available at other JR Duty Free stores.
Update (22/05/2013): From the latest comments it seems that this sale is over hence I'm marking this deal as expired.
It's still a lot for a compact camera with a fixed lens. At this price why wouldn't you just buy a Nex 3 or a Micro 4/3rds camera?