Where to find spice in Kentucky?

I am working on a chemistry lab project for college and I want to do a comparison of the JWH-018 to the compound THC. I need to find some of the different spice/incenses out there. I'm looking for the "Serenity Now" brand mainly. I've heard some about "K2", "Spice", and "black mamba." I wouldn't mind testing these as well. I know that all of these are now illegal in Kentucky, but I will not be here for long. (going back to school). I need to do this project here or I would buy them in my colleges state where it is legal. I live in the Shelby/Spencer/Louisville area of Kentucky.