I've never had much luck with male rabbits being together. I had 2 brothers, Carter and Barry, they weren't too bad but only because Baz was a really docile rabbit (he was more lion head than his brother) I had Carter neutered (approx �30) but he had learnt the mating habit by then and still bullied Barry, so I put carter with a large female and he's very happy now. I have a female reaching adulthood so will get her neutered and put her with Baz so he has some company. Females are more expensive to neuter than males but they get pregnant so easily - they can get pregnant the day after they have given birth!!) that I find its worth getting the girlies done. If you go to your local vets you will have ads from people (such as me) and organisations that rehome rabbits and they are invariably already neutered. They will also have baby rabbits (kittens) to rehome as well - much cheaper than buying them from a pet shop or the paper. My rabs are a constant joy and often run around the house terrorising the cats!!