make marketable

“You can’t make marketable pulp of charcoal, and the price would have to run pretty high before it would pay for ripping most of the log away to get at the residue,” he answered harshly.

They do not make marketable inventions.

For they had been prosperous sugar-makers, and the efforts to make marketable sugar in Louisiana, which had ceased for nearly twenty-five years, were revived.

You can't make marketable pulp of charcoal, and the price would have to run pretty high before it would pay for ripping most of the log away to get at the residue.