Believe it or not, you can find them on eBay with the right search function. I found them hunting for "ariocarpus" cacti. They are disguised pretty well, but they're there and legit. Most I get from succulent corner. Com or org or something like that. Both sources are legit. Just make sure it's the pink flower. The white flower is the false peyote, or diffusa. No medical uses for the diffusa.