If your anywhere near the twin cities you should join the Minnesota Aquarium Society. There is a fish auction on the 30th in the metro... Bloomington I believe. There was fish show this weekend in Fridley, which was too far for me.
My soon to be son-in-law was at the show in Fridley and picked up some nice cherry shrimp. I'm actually in northern Minnesota but my family is in the cities so I get down there fairly often.