One of my uncles was wounded in WW2. While he was in the hospital, a RC worker offered him paper & a pencil, with which to write home. Now, if someone handed me a pencil and did not mention that it was going to cost me something, then I would think it was free. Well, that's not what happened -- after my uncle wrote the letter, the RC worker then charged him for the pencil. Obviously, the pencil's cost was very small, so that was not the issue. it was the way the RC charged after the fact that was the problem.