This seems like a space that is just waiting to get occupied by some entrepreneurial wizardry. There is a huge gap in terms of where to discover and buy relatively nascent technology; a hole somewhere between graduated Kickstarter projects and Best Buy. Where do these somewhat untested vendors go to hawk their novel products? Best Buy, Radio Shack, etc certainly wont be selling items that are just trying to break into the market yet show a great deal of promise.
Grand St seems like they're on to something here...
An online market for discovering and purchasing creative electronics.