No Such Thing As A Free Coffee

I usually buy my non-fair trade coffee from Starbucks, where I get a cup of coffee with the purchase of a bag of coffee grinds. This week, I paid $9.55 for Breakfast Blend + a cup of coffee. Today at Wal-Mart, I saw the same bag of coffee for $8.83, this time no coffee. Thus my free cup of coffee cost $0.72.