For Taffy to be spayed I think it was about 50 dollars, she was about 30 lbs at the time (she was just old enough to be fixed and now she's 3.5 years old and about 55lbs.) Though I don't remamber exactly how much it cost, and it definatly verys according to each vet.

A little off topic: My mom told me that when she got Cupcake (who we only had until I was 3) fixed, the vet asked them if they should trim Cupcakes claws. They said it would be $20 for trimming them while he was under anaesthesia! So, my mom declined the offer. =)