Can you help me i have pet problems?

ok i have a 1 year old rabbit and he is lonely so i have been thinking of getting a male guinea pig but how much would it cost to get them both neutered in the uk- so dont put like $45 because that means nothing to me cuz i live in the uk. i've been thinking of getting them done at pets at home. i dont want to get another rabbit because that might cost more and any way he is a bit old and i did bring another one home but my rabbit kept humping the other one because he was showing whose boss, and it wasn't fair on the little one. so yeah how much for a rabbit and a guinea pig to get nurtured in the uk