Short post, but responses needed

So...
For May, June and July Bryan and I are taking summer classes. We've got our class schedules set. Unfortunately they're not flexible so we can't really work around each other's schedules. This means I need a lot of babysitting for this time. 23 days of it to be exact. This makes me sad, but you have to do what you have to do right? At least none of the classes conflict with work, so I'll only be needing babysitters on ALL of the days *I* have class, because they just coincidentally conflict with some of the days Bryan has class.

My question:
How much would you pay a babysitter to watch a 5, or 6, or 7month Old (since he'll be that old during those months) for 3 hours? 4 hours? that's how long it will be for most of the days, except for five days where it will be more than that. 2 days of 6 hours, and 2 days of 9 hours. if it makes a difference, the times will be 5-7:30 PM (2 1/2 hours, but would pay for a full 3 hours), 4-8 PM (4 hours), and 11AM-5PM (6 hours)and 11 AM -8PM (9 hours).


These days will be from May 18th to July 30th.


and if you're interested let me know, e-mail me and tell me what you charge :)
Thanks in advance.