You might contact the shelters with this suggestion. Should be easy to find statistics on other shelters success. Although $100.00 is not unreasonable for the vet care they get, no fee or low fee does help animals find forever homes plus frees up space and money for the shelters to help other animals. Also if you are able to donate, check with your local shelter to see what they can use. You can pick up a bag of food or maybe some dog toys. We donate when we can afford to. The number of people willing to donate is far more important than the size of the donation. Every little bit helps.