Pretty good deal.
Here is the catch. It was refurbished. I got it from www.outlet.dell.com and it came with only a 90-day warranty. If you want to spend $179 or something on a 3 year warranty, then this is a good way to get a nice computer for a cheap price and still have it covered in case something goes wrong.
Just my opinion. Might work for you.
www.outlet.dell.com
Have to check to see if there is one in Japan .
OH, by the way. .... that Dell Outlet computer came with Windows Vista home premium but has a free upgrade to Win 7 home premium.