In our area we have lots of cat colonies and there are organizations that will do spaying/ neutering for around $35.00. The organization pays the rest to the vet and they do them at a discount. They have vans that go around and do it shopping center parking lots. It's a great service not only to the pet owner but the whole community. They also sell medications at cost to help people out. We have many people on fixed income and it's hard for them to find the money to get heart guard and flea medication.