My System Is an Unfair Exchange of Equal Value

On a leisurely afternoon, Silas would always think of a certain conversation he had with this second-hand system. "Do you... Long for power? I can exchange everything for something of equal value." "Is this why you turned my 10 bucks into 9 bucks?" "Everything has its price set in the dark. You are alone when you travel here. When you are isolated and helpless, only I can stand up and save you..." "Stop, stop, stop, give me back 10 yuan. I have no money to eat tonight." "Then you need to pay 11 yuan, but I promise you, if you keep it, I will treat you..." Silas ignored him and silently closed the pocket watch in his right hand, looked at the nine dollars in his left hand, and then looked at the cheapest set meal on the menu, which cost 10 yuan, and could only put it in his trouser pocket.