increasing the price due to supply and demand issue is most common scenarios here..this is just a business strategy for Sony.. the more it becomes expensive the more it will become interesting..people will wonder what's with the Z2! haha!
Sony you're going to kill me!!! I will buy Xperia Z2 2-4 Months after the launch to get more lower price!!!
So to counteract the shortage of supplies is to raise the price even higher to decrease the number of people buying the product? Nice logic there.