He's glad the boy doesn't argue. He wanted the child to have something good.

"I'm really certain," Rhy agreed, smiling. "It would make me happy to get this into your hands sooner, and we will definitely let you pay me back. If you didn't intend to do it, then this would be a gift to you, and it would then be rude for you to give it to someone else. No, you will buy it, I will just have you buy it from me and let you hold onto it."