Retailers fight back against Amazon's low pricesAs the holiday season heats up, so does the battle for your buck. Apple to expand to Phoenix, employ 700 iPads face tough holiday competition Jobs' Silicon Valley home gets historic designation Tech companies lead Bay Area buying binge New iPads likely at Apple event next week USDA warns California poultry producer linked to outbreak Are Amazon's drones a fantasy or the future? Visionaries coming more often from private sector. But is latest idea realistic? Other companies join Amazon in testing delivery drones UPS and Google are reported to also be testing drones to deliver packages.