Office for iPad is here. That means you can now download touch-optimized, tablet-specific versions of Microsoft's Word, Excel, and PowerPoint from the App Store and view or present Office documents for free. If you want to do anything more than that, if you want to edit them, you'll need an Office 365 subscription. That can run you anywhere from a few to quite a few dollars per month, depending on the type of account you get. If you're a business user who already has a subscription, you've no doubt been waiting for Office for iPad for a long time and either had to or wanted to get it the minute it became available. If you're not a business user, however, the question isn't just whether Office for iPad is good or not, but whether it's good enough to warrant the recurring price. So, is it?