I think it's about £35 - £40 for a male neuter at my vets (can't recall exactly). But then again, I didn't get a free kitten check so there's that to consider too. I took Mosi to be checked over a few days after I brought him home and paid £20 consulting fee, so I guess overall I paid the same as your vet is charging! I'd ring around a few other vets in your area just to find out what they charge. Then you can see whether you just live in an expensive area or whether your vet is charging a lot more than the others.