For instance, assume that Will is a cleaner who is working in the cleaning administration organization and Amie employed Will to tidy up her room consistently for $100. The open door cost of Will's time is $80, while the worth of a perfect house to Amie is $120. Consequently, every one of them get same measure of advantage from their arrangement. Amie and Will each get an advantage of $20, making the all out surplus from exchange $40