Ordering straight from the breeder usually means fresher stock and fewer questions about authenticity, but many breeders do not ship internationally or only sell in large packs. Resellers offer wider selection and singles at the cost of an extra middleman handling storage. There is a rundown of how the major banks source and store their inventory at https://queenfeminizedseeds.com that helped me decide who to trust with pricier packs. For a strain I really care about, direct is still my preference.