ASUS' official dock for the Nexus 7 has been an elusive beast, to put it mildly: Americans, at least, have had to sit tight for half a year if they weren't content with third-party hardware. We just might be reaching the end of that road, if B&H is right. The retailer is listing the audio-capable cradle as arriving January 10th for $40. The accessory could be tantalizingly close as a result, although we'll believe it when we're charging our tablets -- we'