I set one of these up a long time ago for my sisters family (6 people) and that was going to be a lot of pain to sort out, or expensive and turn the family into a business for some reason...
And for myself I set it up but I only have one user, and would love nothing better than to be allowed to convert it to a normal google account - if I could keep using my own domain. Would be happy to pay a reasonable amount for this.