hermione sweater

I'm working on creating a pattern for the sweater Hermione is wearing in this picture. It looks like it may be put on the long-term list, though, since with 10 colors it looks like the yarn may be a bit pricey. Cascade 220 is my favorite sweater yarn, but it would cost at least $70, and I can't afford that right now. Maybe on Monday I'll be able to make it out to a craft store and find a cheaper substitute, right now I can't really get going on the pattern without a guage :(.