I started calling around when I asked my regular vet's office their neuter prices. Ordinarily it wouldn't have been too terribly much of an issue, but I wanted to have them both done at once. $107 JUST for the surgery/anesthetic --- pain meds, bloodwork, etc., was "extra." That would probably have been close to $300 for the two of them! I was so shocked I called back later to confirm that I hadn't been given spay prices instead.
I found that it varied widely with about $40 or so being the bottom and that $107 being the top. I finally checked out a "cats only" vet I'd never used and she charged $75 including bloodwork and pain med. I figure it was about half what I'd've been paying at what I'm now referring to as my "dog" vet LOL. More than happy, and very happy to have a cats only (in fact that's the name of the clinic is Cats Only
...) vet within a reasonable distance even though she's a 15-20 minute drive as opposed to a 5 minute drive.