The Nexus 7 is a wild success, and Google seems to have sold out of the 16GB version of the tablet. A day ago, the tablet was listed as “Shipping in 3-4 weeks,” but today, Google has simply removed the option to purchase the tablet and has listed it as “Coming Soon.”
Google has offered an email notification form to notify you when the tablet will be available for purchase again. The 8GB version, however, is still available and will ship between 3-5 business days.
For now, if you’re eager to get your hands on a Nexus 7 16GB, your best bet is either eBay or Craigslist.
Source: Google Play