For a family of two, we are happily using about 3 subscriptions. You can add a friend or family for the un-used of the 5 subscriptions. Just one mail for invita

For a family of two, we are happily using about 3 subscriptions. You can add a friend or family for the un-used of the 5 subscriptions. Just one mail for invitation and they have it. The simplicity of the sharing the subscriptions made me a believer. There will always be people who will complain about the cost of subscription for both XBL and Office 365, but I think it is reasonably priced at least in the US.