Spider Patch
Specializing in captive bred tarantulas and other arachnids; also sells millipedes. View price list online.
www.spiderpatch.com/   reviews

Zoo Keeper Exotic Pets (Austin, TX)
Exotic pet retailer in Austin, Texas specializes in invertebrates, along with frogs, lizards, snakes, tortoises and small critters.
www.kingsnake.com/zookeeper/   reviews

Midwest Marvels of Wisconsin,USA
Offers a diverse selection of invertebrates including spiders, scorpions and millipedes. View the current price list online and read the caresheets for various invertebrates.
www.geocities.com/midwestmarvels/   reviews