You could try a reptile show. A lot of times there will be someone selling roaches. I received an e-mail about a herp show in Lancaster. Here is where it's located: The Lititz Community Center 301 West Maple Street Lititz, Pa 17522. Here is the link to the site:
http://pythons.com/lanshow/
I breed a number of them including woods, lobsters, and hissers. The woods don't seem to be as hard (less crunching when the Leos eat them) as many of the others and they seem to breed like crazy.