There are a number of good suppliers online, including the one I linked. You might try a local hardware or feed and seed store for thermometers, substrate, and such, or a locally-owned petstore or Petco or rodentpro.com for food, and OfficeDepot or local office supply stores for suitable enclosures. Wal-Mart succeeds through being convenient (and often driving small competitors out of busines ...), but there is usually a way to get around them.