Neutering my male cost $125, which is about the same price they charge to neuter a dog. They did a pom-on surgery with a laser -- it was minimally invasive and my boy was up and about like nothing had happened as soon as the anesthesia wore off.
I've read that there are chances of self-mutilation as a result of the glider being in pain, but my vet said she had never had any of her patients experience that problem. Pain medication should decrease the risk of that happening.
My vet said that they can normally rejoin their colony that same day, but she suggested that I keep my boy in a separate for a day since I mentioned that my girl can sometimes be a little snippy and aggressive. Other than that, I didn't experience any problems, nor did I have to really do anything special afterward. My boy and girl had a very sweet reunion the next day.
I guess I was lucky in the sense that my boy, Paulie, has always had a loving temperament, so I didn't notice any differences in that respect after the neuter. The smell has gone down TREMENDOUSLY since the neuter and I am sooo thankful.