Originally Posted by AfterSchoolMom:
$25/day per child for one family, $30 for the other, so only $2.50 - $3.00 per hour. Unfortunately, that's all I can expect here due to so many discount providers. That's for another topic, though. 
Oh yeah then I would have them play toys with each other. That's just a fee for supervision and their housing expenses that day. You could offer activites to the parents for additional fees but my guess is they will be happy to get such a great rate for just supervision and daily cost.