So how much do you charge for babysitting?

The other day we were all eating dinner and we were reminding the kids that I was going somewhere (I don't remember where) and that I wouldn't be home. Alex works late most nights (besides Mon) and so they wondered who their babysitter would be. I said that dad would be home. Then there was lots of whispering and saying you tell them. None of them would speak but it was obviously important to them. Finally, one of them choked out a meager, "Tanner (their cousin) said that when his dad babysits that he does it for free. His mom doesn't even have to pay for him to do that. Maybe Tanner's dad could do it so it wouldn't cost us anything." So I thought that was hysterical. And no Alex doesn't get paid to babysit in case you were wondering.