Babysitting rate calculator?

Sittercity has a calculator which is great except they don’t explain their methodology. They ask for a zip code, number of kids and years of experience belonging to the sitter.

Let’s assume you’ve got 2+ kids and this person has been on and off babysitting since they were 12. Here’s what I think is the market rate for good help by age and driver’s license (note the bump).

Babsyitter rates by AGE

11-13 $7.50/hr

13-16 $8.50/hr

16-18 $10/hr

18-22 $12.50

22+ = $13+

That’s assuming your in an area with a slightly higher cost of living like San Francisco, New York, Los Angeles etc.