When you buy a new device, that's only the beginning. You also have to buy stuff for it. If you're searching for a case to protect your new Nexus 7, Amazon has a number of good deals. Updated versions of several cases from rooCASE are about to ship, and they'll only cost you a few bucks.
These cases got excellent reviews for the 1st generation N7, so they ought to work well with the updated model too.