The specimens in any cryobank should have absolutely no contact with each other. Many states now have guidelines recommending that men be checked for multiple sexually transmitted diseases (HIV, hepatitis, etc.) in order for their specimens to be stored. Be sure any cryobank you consider follows these guidelines whether or not they are required.
To see a comprehensive list of FDA sperm bank guidelines visit here.
Costs for sperm banking services can be found here.
If you seeking a sperm donation, or are a prospective donor, here is a list of sperm banks by location.