Found this on nj.com- Friends of Animals Spay/Neuter program:
Simply visit Friends of Animals by going to
Friends of Animals - Home, click on "Spay/Neuter Certificates," type in your zip code, fill out the Spay/Neuter Certificates Request and they'll send you instructions on how to purchase your certificate. By providing them with your zip code, they'll send you a list of participating veterinarians in your area that accept the program. You may be surprised to find that your own vet participates in the program. Rates are as follows:
Female Cat Spay $65.00
Male Cat Neuter $51.00
Female Dog Spay $90.00
Male Dog Neuter $64.00
My vet didn't come up on the search but maybe someone will get lucky and see that their vet participates.