It's no secret that both the 8GB and 16GB variants of Google's Nexus 7 have been set to ship in two to three weeks from pre-orders placed at its Play store. While retailers like Gamestop are also remaining mum on specifics, Staples has stepped up with actual arrival dates on its US and Canadian websites for the 16GB model. Apparently, fast fingers within the United 50 that lay out $250 to reserve one of the