The value of 50,000 yen in the Japanese economy is not equivilent to the value of $450 in the American economy. Japan is much, much more expensive. Does your company have a per diem for travel? Check their rate for Japan, and compare to anywhere in North America. Dollars to donuts that Japan is significantly higher. The last place I worked paid $35/day for The US, $45 for Canada, and $75 for Japan.
So how much will the PS3 cost? $300. Well, $299.99.
I'm big on predictions lately. Play along at home!
I'm also standing by my prediction that Microsoft will either have a Linux-based kernel in Windows, or shelve Windows in favor of a Linux-based operating system by 2015. I've been saying this since Apple picked up BSD for OS X. It'll happen, people! Watch for it!