You can call the Humane Society using the link that @Norachan gave you in Post #255. They can answer all your questions about spay and neuter, vaccines, and cost. I would not put off getting this information.
You should also consider seeing that all the kittens get good homes since your family is on a tight budget and cannot afford them.
You should also consider seeing that all the kittens get good homes since your family is on a tight budget and cannot afford them.