J.J.
Well I would say anywhere from $10 to $15 an hour depending on things as others have said. I also wonder why your 11 yo couldn't babysit. I started sitting right around when i turned 11, and I sat for a 2 yo child, a family with 3 kids aged 3, 5 and 7 on a regular basis and a few families occasionally with two children each. This continued from age 11 until I was in high school. It turned into an excellent way to save money and I saved enough to go pay my way to space academy by the time I was almost 14. It really taught me the value of money and using it and saving it wisely. If your 11 yo is mature enough I would just pay him/her and it would be much cheaper. Otherwise i would ask the sitter what she is looking for in hourly payment, if she doesn't know make a suggestion and ask if that is fair. I paid a college student $15 an hour to help me with my kids ages 2 and 4 at the time. It varies by area, age of the sitter and ages of your children.