Price. Always a consideration. That's why I'm looking for a used one. I have seen a few where the ad says "only used a few days" or something like that. I suspect they were used for that one big mountaineering trip, then the person gave up on winter camping.

I also need a new pair of winter boots, so time to start looking for those, and snowshoes. I've got a big parka and insulated pants although I'd love to have one of Kevin's cotton anoraks with a big fur ruff- http://www.empirecanvasworks.com/arcticanorak.htm
But, I wouldn't get that much use out of it to warrant the expense.