My fees are the same regardless of age. I generally don't take kids over the age of 3 unless they have been with me since the beginning.

I do however, think I am going to change my fees according to hours. Right now its the same whether your child is here for 9 hours or 12 hours...I find that now I have families leaving their kids for 11-12 hours just because they can and not because they need it. They are going shopping after work, out for an early dinner, visiting friends etc and then coming to get the kids. not fair to their little ones so for that to stop generally you need to hit the pocketbook!