Google's Andy Rubin suggested the Nexus 7 would reach third-party US stores eventually -- we just didn't think it would be this quickly. GameStop says it's taking pre-orders for the 16GB version of the Android 4.1 tablet starting today. At $249, it will cost exactly what it does in its currently exclusive Google Play home; in other words, one of the parties involved could be taking a voluntary hit on the already razor-thin profit margi
