My friend went to japan bout a year ago during those two months. Pow was rediculous, like knee deep fluff
I live in Hokkaido, but have only been here for a few months. I can't wait for my first winter here! We've already had some snow up on the higher mountains.
It's not as expensive as you'd think.
This is the average monthly snowfall (inches) in Niseko from Nov to April, January is the snowiest, but not by far. This is average though, we have had some big falls in March the last few years.
I'm based in central Hokkaido, and I have a car. If anyone wants to come and check out some of the lesser known central spots (Asahidake, Kurodake, Kamui) drop me a line.
One thing at the moment that will make Japan expensive is the exchange rate. The Yen is really strong at the moment, meaning your dollars/pounds etc won't stretch as far. Those of us earning Yen aren't affected by this of course!