I didn't want to waste the time and money, they charge by the second, you know.

But in 1986, it began charging by the credit hour.

A plan may pay trial costs, but only up to a certain amount; the lawyer is then likely to charge by the hour.

Because lawyers, who usually charge by the hour, never complain.

And that means carriers will all have to "charge by the bit."

Then they put up a toll structure to charge by car; right?

Communications experts say they could charge by the minute or the bit.

Others charge by the month, with extra fees for certain classes.

The telegraph companies charged for their service by the number of words in a message.

And speaking of psychiatrists, as I was just about to, doesn't it make sense for them to charge by the problem?