Wow, I guess I have it good! I'd never be able to go out if I had to pay as much as the ladies below!
I have lived in Lynnwood for 5 years, and used the same babysitter. (Now that she's working and in college we've also started using her younger sister who is a Sophomore this year.) When we started our two girls were 1 and 3, now our four daughters are 8, 6, 2 1/2, and 1 month. We still pay the same rate - $8/hour. Good grief, minimum wage is $8.35, so I don't really see a problem here.
Generally infants cost more than older kids who don't need as much care. I babysit twice a week, two girls who are 4 and 7, and I am paid $4/hour for the first hour with the 4 year old, then $6/hour when the 1st grader gets here. This is for a friend, so that makes a difference vs. it being my business.
There are other posts that have come through about this, with a lot of interesting points of view, so you might want to search the site for those since there are only a few replies so far to your question. Good luck with your decision!