You forgot the limit of 3 devices for the free Dropbox plan. And that with Office365 you have 6 licenses of Office + 6 x 60mins of Skype per month... Google Drive, on the other hand, is offering 15GB for free, 2TB for $100/year. And you can invite 5 family members with their own storage and work as a team. Dropbox is becoming seriously overpriced.
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