How much to neuter 2 male and spay 1 female kittens?

You will have to call their clinic line to find out.

What clinic?

I got a male kitty neutered there and was charged $30 plus pain meds, which were cheap. They also do very low cost vaccinations

There are certain days that they start taking appointments for the following month. There was a "special" recently. Agreed with above call to get updated info.

If you're Sacramento resident they will neuter and spay cats for free but you have to call and find out when they take those names and the dates.