If you don't mind the weight, a thick wool sweater would work. They will keep you warm, even if wet and can be had cheap. As far as down is concerned, I have a TNF Nuptse, but it isn't waterproof at all. I got mine at a TNF outlet store. If you do buy any TNF gear, be wary of where you get it-there is a lot of counterfeit TNF clothing and gear on the Internet, including eBay.

I would look at LL Bean, EMS, and STP (Sierra Trading Post). You should also start to see sales on winter gear about now and next month for sure. You have plenty of time, so don't buy too soon-wait til the sales start.

Just saw a post on another site that Dick's and Eddie Bauer have sales on now. Probably for Presidents' Day weekend.