My daughter makes $10 an hour for 3 kids for 2 different families and we live in a small town. In fact, the families are so grateful to have her babysit because unlike a lot of teens, she actually plays with them and enjoys being with them instead of hanging on a cell phone all day and letting the kids do their own thing. She will be sitting for the one family next weekend for 9 hours and she will still be paid the hourly rate. However, if she were sitting for 2 days, I think I personally, as her mother, would talk to my daughter along with the family and come up with an agreed upon amount - I think $100 would be plenty because I figure she wouldn't make that flipping burgers after taxes,etc. and if she wants to be asked to sit again, the family will appreciate that she met them half way. I would also make sure that my daughter wouldn't be taken advantage in anyway with regards to maybe the family cutting back on paying her for future short jobs... trust me from experience (I have 4 daughters), sometimes people will be tight and try to cheat the sitter at the end of the night.