I recommend American Livestock for a new inexpensive incubator and other supplies. If you order more than $75 the shipping is free. I love their prices too!
I have a still air LG that I will sell you for $40 - it works great. I will even add in some hatching eggs for your daughter. If interested let me know. I am in Hot Springs - Malvern AR area but will be going to Little Rock tomorrow.