Ruffner Mountain (nature preserve in Birmingham, AL) is hosting their annual Spring Plant Sale this April, open every Saturday. I haven't gone to this sale before, but I've been wanting to add some more native plants and it looks like they have a good selection. There's an inventory here, including species (and varietals in some cases), prices, and pot sizes.
Edited to add: link to information about the sale and times.
by FourCatsDance