I have emailed sunshine-seeds with my order before, and it worked out great.
Barna, I gave two plants of Musa itinerans (Yunnan) to a friend of mine in Nashville, TN last year. They made it through last winter just fine, although Nashville had a mild winter. I believe their absolute low last winter was around 12F (-11C). They died back to the corms, and resprouted from new pups in the Spring. The old growing points were killed. The corm doesn't appear to have sustained any damage though, and here are the plants as of early October of this year:
