There was a rich couple who was throwing a big new year party at their house. So they went shopping at the market where everything was of high cost and fixed price. They wanted to maintain their level of standard so didn't mind paying for it.
After purchasing all they needed, they called a porter to carry everything and drop it at their home. The porter who came was of an old age, not very healthy looking, his clothes were torn, looked as if wasn't even able to meet his daily needs.
They asked the porter about the charges for delivering their goods at their home. The old porter quoted just a $20, a well below the market rate for delivering goods at couple's home in his cart.
Yet, the couple argued and bargained with the porter and finally settled for $15. The porter was struggling to make even one time's meal so he needed anything he can earn.