Cory brother where are you from? You don't sound like a San Antonio native. Plus you seem to actually care which doesn't seem like a San Antonio native.
Excellent video Cory ! I live in Memphis (zone 6b) constantly promote planting these. Matter of fact, I just recommended an Irish Master Gardner add some to her Gaeden.
good question! Not sure about your specific native plant nurseries, but, this nursery based in Alabama (I think) does sell them online! www.nativnurseries.com/products/american-beautyberry-seedlings-for-sale-callicarpa-americana?variant=15165858250809¤cy=USD&srsltid=AfmBOorbISE2ldRLgyGww1AWoeT93OEWaoWBqt9q9QboiPH4UuWM7r0lFLo I do believe there are a lot of other places that sell online, too.