Welcome to the forum.
Right now is probably not a good time to buy false unicorn, its too hot and too dry in the south. Also most of the female plants are in the seed growth stage which wont be complete until the middle of october. I have transplanted false unicorn in August, but it was dug and planted within the same hour, leaving alot of dirt attached to the roots. In my opinion buying and shipping right now would be risky. I currently dont offer any for sell as well, but you may be able to contact some of the herb dealers that visit the site.