Hi,
I have a user starting next week and I am thinking about what office 365 plan I should get for him. The main purpose of using this plan is to get him only Office applications as we have On-premise Exchange server so email service is requried.
In Australia, Office 365 ProPlus is more expensive then Business Premium which I think it is nonsense because Business Premium also offers thelatest version of office application and I think ProPlus should be cheaper or at least equally same. The only differences between these two plans are Office 365 ProPlus plan comes with Access 2013 which Premium plan does not offer and Exchange online.
Office 365 Business Premium: $17.50 user/month
https://products.office.com/en-au/business/compare-office-365-for-business-plans
Office 365 ProPlus: $19.40 user/month