Male rabbits who are not neutered have very strong smelling urine. That will subside after neutering. It will also make him less aggressive.
How to find a rabbit savvy vet is explained in the site below. Prices vary greatly depending on your area and your vet. I've seen from $40 to $150. Risks and other details are all outlined in the site:
You don't have to worry about getting a rabbit spayed or neutered and here is why:
The spraying problem that the one person mentioned in regards to male rabbits is more genetically related than related to neutering. I've raised rabbits for over 24 years and have noticed that the herds of certain breeders will spray. You can have the same breed and same variety and one person's herd will spray and the other's won't. This is mainly due to breeding and genetics. A good rabbit breeder will not breed with rabbits that spray because their babies will more than likely carry on this trait. I personally never keep a rabbit that sprays to breed with and I pretty much never have a problem with the babies of those rabbits spraying as a result.
Regarding spaying and rabbit cancer: In 24 years of raising rabbits, I've never had a rabbit die of cancer and I've had thousands of rabbits in that period of time. So I wouldn't worry about it dying of cancer. It'll die of something else before cancer gets it.
Spaying/neutering with regards to breeding and false pregnancies: Rabbits should be kept in their own separate cages after they've been weened at about 60-70 days old. The reason for this is to avoid the rabbits fighting (fur in pen), chewing each other's fur, and biting each other (Noticed by: nicked ears, bites/bumps on back, missing tail/tail chewed off). It also prevents the rabbits from breeding if you have a male and female together. If you have the rabbits separated as they should be, for the most part, there is no reason to spay or neuter.
Spaying/neutering in regards to showing: A spayed or neutered rabbit cannot be shown in competition. It will be disqualified. I know this is a fact for neutered males. Not totally sure on spayed females, but I think it would be. To make sure you could contact the American Rabbit Breeders Association at:
They set the rules and guidelines for rabbit shows.
One good possible reason for spaying: Female rabbits when they reach about 4 months old will go through their hormonal cycle. Some female rabbits at this age will turn mean due to the hormones and wanting to be bred. Females shouldn't be bred until they are about 8 months old. Sometimes after the rabbit has her babies she will calm down and return to the friendly rabbit she was before. In this instance to curb the behavior of the female due to the hormones, it may be a good idea to have the female spayed if the rabbit is not planning on being used to breed with and kept as just a pet.