The thing is that once you pay them for 10 users they buy 10 CALs. When you decide to discontinue service they still retian the CALs and they will have been paid by then and for the next client that signs up they will be making pure profits for the 10 at least. Its one of those initial investments thing that after your up and running you will be making big $$$ after a while.

Hello my name is Robdog888. I am a long lost relative needing some money from you in the form of a Grant.