http://www.divorceinfo.com/alchildcarerates.htmhere's a link on Lee's site that has a list of the maximum weekly rates allowed in AL. You may want to check into the county you are living in in your state and see if they have a similar table, if so, you may try to argue that your county's rates should be used as that is where the child lives.
the lowest rate on the table is $65 a week and that multiplied by 4.333 is $281.45. You should be able to use that rate as a minimum.
good luck.