Man-hours will be used to evaluate cost instead of money

Strugatsky Brothers : science fiction authors
“Fine,” said Sidorov. “Now I’ll tell you what you don’t know. In the first
place, the Egg costs nineteen thousand man-hours of skilled labor. In the
second place, it really does weigh all of one hundred and fifty kilos, and you
will haul it yourselves to where we need it.”

Noon: 22nd Century