Season 7, Episode 21: "The Bottle Deposit"

-What is this "MI, 10 cents"? -That's Michigan.

In Michigan you get 10 cents.

-Ten cents? -Yeah.

Wait a minute, you mean you get 5 cents here and 10 cents there?

You could round up bottles and run them to Michigan.

-No, it doesn't work. -What do you mean?

You get enough bottles--

You overload your inventory, and you blow your margins on gasoline.