That sucks about Charlie, but man, $100 is nothing for a vet bill. If I could get away with paying only $100 I'd be dancing all the way home. Maybe it's because I'm in CA, but any time we need anything other than a routine check-up, we're usually out $200-$300 on average.

That said, if the daycare didn't inform you of Charlie's wounds, I wouldn't bring him back there... they are clearly negligent. If you're feeling litigious, you might even consider a lawsuit for your "mental anguish." I hate lawsuits, but I hate seeing animals abused or neglected even more...