How much money does it cost for a guinea pig to go to the vet?

My guinea pig is not sick. He is far away from sick. HE IS AWESOME. A healthy guinea pig. But here pretty soon i am gonna get him a playmate. Maybe a girl. that is a nother thing. WHich sex is better with a boy guinea pig that is so sweet? Well when i bought him he never hurt the other boy guinea pigs. Or girls. lol. Well, i wanted to ask that to. How muc does it cost to get a guinea pig spaded or neuterd. i can't spell that word. don't no y. Well. I live in alabama andi have never been to a vet here. So if anyone can give me a clue. I would be delighted. and when i do get a 2nd guinea pig. should i take them both to the vet, or just one? thanks if you answer. by :-)