We budget $70 for fuel each month, and $50 for car repair. We also had $75 saved up in my bicycling envelope which is for my normal commuting to work.
Altogether that gives us $195 to spend on winter cycling apparel. We already have bicycles that we are going to use.
We ended up buying most everything from www.nashbar.com. They were having a great winter sale. We got Kristin some amazing winter gloves for $12.