I didn't get to it last year, but the previous two years, I was in Chicago area when they had this fishing equipment "flea market" at a local High School.
It's an annual event, and several tables would have huge baggies full of odds and ends, fly tying materials and tools, etc.
I bought one both years, for $25.00 each. I had my money's worth just from the tools in each bag ... and the materials were icing on the cake.
I am hoping it will happen one of the weekends I'll be up there this coming winter.
Rich mc can give more details on it, as he's from the area.