Buying American, fly shows and other topics

There is a fly fishing expo next week @ Macomb Comunity College. However theres never any deals, and it cost to go there which I never understood becuse its put on by all these high dollar fly shops that want buisness. If I were to run an expo, it would have free admission, so the public isnt spending 15$ on walking around, but 15$ murchandise. By the way I'm fishing the MO this weekend starting Sat, after I pay homage to the 6th st.