None that i can think of. I started my Blue Cheese journey when I bought an ounce from a dispensary. There was a couple seeds in it and i grew them out and bred with them. As far as a breeder? Youre speaking to the wrong man. I have only bought 1 pack of seeds ever. The rest i have i make by breeding. Its more simple than you think. Check the links in my signature. One is making coco oil. The other os harvesting pollen from a male and making seeds.