I think they were trying to estimate the cost of the shoes rather than just asking. Perhaps the babysitter had said it was fine, but they still want to reimburse her.
I liked today’s episode. I like the ones where they flit between topics. I enjoyed Josh making all those jokes about Lou, after how Rob has been for months about Rose being in Cornwall. About time he got his own back!
Although I’m sure it’s all in jest - they seem to like each other’s partners.