These are the prices for both PC and Mac. At Best Buy, for example, the prices are the same for the subscription cards, but in some cases, they may hold a sale to bring the costs down. Microsoft Office, designed for the iPad, is free for reading only, but if you want to use the full functionality, you will need an Office subscription. In the end, when purchasing Microsoft Office, you have three options: These subscriptions will include up-to-date applications for up to five users. The one-time fee, however, will only include one install only.