Help the sick kittens from Union County

Union County Animal Control is a shelter that has no help from cat rescues. They either euthanize the majority of their felines, or they sell them to laboratories. We've been helping them with some cats/kittens on occasion, and recently offered to pull several litters of kittens. While the majority of the kittens have remained healthy, several have not. The orange, long haired litter has coccidia, and one littermate (Brody) is the sickest. He has been seen by the ER vet once already for a fecal, coccidia, and fluids ($242), and is now back at the same ER vet because he's not breathing correctly and losing weight. He was admitted Wednesday and did make it through the night, but is not good at all. His sister Ava is doing better but still really weak, and the doctor said she will know more this afternoon if she can be released.
A second litter, three of whom died in their cage in the shelter, is doing well except for one kitten who's eye is so infected he cannot open it. He is at a regular vet today for the 2nd time in a week. Hopefully they can figure out which meds are the correct ones to treat him with.
Brody and Ava were estimated to cost around $400 each just for last night. I don't have a quote on the other kitten yet. If we choose to save Brody, this number can go much higher. So we need help!