Hi - What do people pay for someone to babysit - as in be in the house whilst my 9 year old is asleep, say from 9 pm till midnight? I have an au pair who has free time at weekends, but I'd like to ask him to babysit occasionally on a Friday or Saturday night. Not sure what extra to give him...help! It's basically extra pocket money as he lives with me any way so is fed and doesn't need transport home.... Thanks