That $1,500 price tag for Google Glass Explorer Edition? Perhaps it makes a bit more sense considering that US labor will be used to manufacturer it. According to unnamed sources cited by Financial Times, the first run of production-quality Glass headsets will be built in Santa Clara, California. The reason? A lot is riding on the quality of Glass, and it's likely that Google just wants to keep a close eye on every single prototype that leaves the lab. In fact, it's not ex