All the Presents

It's Christmas morning and after all the gifts are unwrapped Little Johnny ask the following qeustion, "Mother, where did all these pretty toys come from?" Mother: "Johnny, Santa brought all of them." Johnny: "Did he bring everything? Did he bring the electric train, the baseball glove and bat? The ice skates..." Mother: "Yes Johnny, Santa brought everything." Johnny: "Well, then who buys all the things in the stores?"