I think it depends where you live. In NJ it's around 10$ an hr. More than 2 kids it's up to 15. Start at 8 and as u gain experience u can prob charge more. There's a few websites for this gig. Sittercity is a good start. Good luck. ;)
A reasonable price to charge per hour for babysitting is around $8 - $12. This is the average babysitting rate but babysitting wages can vary widely anywhere from as little as $4 per hour all the way up to $18 per hour or more.