Maybe the
LFS will give you something for them, a bit of store credit perhaps, but don't expect much. Got friends with aquariums? Neighbors? Coworkers? Give em away or trade for something else.
I currently have about 30 White Cloud Mountain Minnows (various sizes) that I'm trying to figure out what to do with! Some are going into a tank at work, but I really don't know about the rest.
Trust me, this is a GOOD dilemma, way better than "My Fish all died".