I'm south of you and trap on a pretty small scale: only targeting beaver and a maximum of about 12 sets at any one time. There's no stores to buy trapping supplies anywhere near me and I've gotten used to buying online. If a store opened up within a half hour of me, I honestly doubt that it would be worth it to me to drive over there to buy versus continuing to buy online.
What I could use locally would be training and mentorship. I'd definitely be willing to pay if somebody in my neighborhood would to charge something reasonable to take a morning to look at my sets and critique my work. Youtube is great, but it's hard when that's your only teacher.
I don't really trap to sell fur, but I don't like to throw away good fur and don't have any options to sell. So I'd also be interested in a spot to sell locally, even if the prices were very low. I basically just want to offload the fur quickly and easily. So far for me that's meant giving it away to people who then take it to a taxidermist.
Hope that helps. Good luck with whatever you decide to do.