Since when a person considered an item? Since when 'putting an item into a box' is equivalent to 'putting a paper with item's description' there? A human life doesn't have a price on it to begin with, because people are not for sale, there isn't a market for humans, so the price couldn't be verified, right? (This setting lacks slavery, I think) Any price she put on herself is subjective.
They would be absolutely CRUSHED, DEMOLISHED by any impartial arbitration court. They scammed him.