E.
I found that the low end of an at-home licensed day care (tax deductable) charged me $35 per day for 3 days per week. She gave me 6 sick/vacation days, that I did not have to pay her. I also did not have to pay her for any holidays or vacation/sick time that she took off. She charged $30/day for 4-5 days per week and gave 8-10 sick/vacation days. I discovered that this was an incredible deal.
Now, I pay $35 per day for 4 days per week and I have to pay no matter what. Weather my kids are there or not. It is also tax deductable.
I would say, if you are paying her cash and not using it as a tax deduction. I would offer her between $20-$25/day, you'll cover extra activity fees. You'll supply baby food and Milk/formula. I think the state rate is $25/day.