@wastingtimewithforums: With Office 365 (or many other "cloud" solutions) you don't loose everything, it is just temporarily inaccessible and in an emergency you can use your home internet connection or cellphone for a limited period of time. If you lose a connection for 48+ hours, I am not sure pop3 connectors are the answer if you have an on premises mail server.
I don't agree with you that the cost of SBS standard with 30 CALs is only $2377. That simply does not take into account the resources needed to have the same level of service as a large datacenter. This does not factor in upgrades (software and hardware), added complexity, and the cost of backups and hardware resources in case of: fire, thefts, water damage, lightening, etc.