I know my petsmart sells them, but then I'm in Ohio. If you're looking to breed Fancy guppies, get the guppies that show the characteristics you're looking for. To be honest, I got rid of my guppies, because they were breeding themselves out. I started out with 10 guppies (3 male,7 female) and in 6 months time they filled the tank (30 gallon).
Even feeding them to my cichlids everyday, they were producing too fast.