You don't need to worry about the.plants you get from Dagga Farmacy. They are generally healthy. You don't get a rooted clone you actually get a small plant.
If you buy seeds just buy from Trophy seeds, african smoke shop or biltong and buds. Seeds are tricky though especially if you are new to growing. They don't always germinate and then you start blaming people.
Other places in north that sell quality clones is either Golden-goose or African smoke head shop. They have actually hunted through a breeders pack of seeds and sell their keeper cut.