Can you purchase breadfruit anywhere? I feel like that's a stupid question, but you can buy fresh durian, mangosteens, jackfruit, ect in Des Moines, IA. The only thing they don't carry is breadfruit.
I saw durian in the Sun Foods store in Brooklyn Park, so I would check there for breadfruit as well. There is also a location in the midway area of St. Paul on University Avenue. They are ethnic grocery stores that are the size of regular grocery stores.