You want to buy as many as possible really. They take many months to mature and breed. I bought 200 to start and couldn't actually feed out of it for 6-8 months. And as for buying some... Maybe there's a reptile show around you? If so, they sell them there and that would be the safest way to transport them. Or you could look at your local Craigslist. I'm in Ma and was lucky enough to find someone who has a giant colony that he sells out of nearby.