there will be a bunch at the daytona show if you have a friend going there you could ask for someone to pick it up or you can look online for local shows, they are usually pretty common. If not, start checking classifieds like www.kingsnake.com
I went to one last year, there were a good amount of turtles, the only softshell I remember was a small albino one that cost around 300. http://www.mdreptilefarm.com/shows/va/nva.asp
I think the next one is at the end of the month.