i have had this family for over 4 years now, and I still get an occasional call when the sched got changed around, "how much do we owe you?" just because the kid came a dif ammount of days doesnt mean you can't calculate daily charge by that number of days. I always smart a$$! comment like.."well, he was here four days this week and I charge 30$ perday so...4 X 30 = 120" duh!!!! maybe I should say 150$ and see if they really know the answer, I'm sure they would catch it and say, no shouldn't it be 120? but if I went the other way, theyd probly shut up and pay the lower number. ha ha