Benjamin took the twenty, and pressed the button the register that opened up the drawer. He started grabbing the change, mouthing the numbers as he counted it out, to make sure that the register was correct with how much money was owed. Though, it wasn't too hard to do the math for something this simple, he still double checked the math out of habit. He handed over the money, and for the first time making eye contact with the customer, "No, thank you. I don't have the money to hire an assistant nor am I interested in hiring one." He pushed the book on the counter back towards the customer and then grabbed his own book and went back to reading his own book. He couldn't afford another person to be walking around the place, for more reasons than just not having the money to pay them. He wasn't going to risk someone getting themselves hurt because of the bookstore's habit of summoning weird creatures that could easily harm anyone in sight. He also was quite sure that he wasn't supposed to be showing people that he was a magician, though he wasn't quite sure about the rules with that. The council never really explained all the rules to him before sticking him in this job.