Amazon’s third quarter sales and profits came in at the high end of their guidance from three months ago, and investors promptly lifted shares. After hitting an all-time high early Friday morning, share gains have settled to about 6.5 percent. Net sales increased of $25.4 billion were 23 percent higher than a year ago, and operating income was $406 million — compared to an operating loss of $544 million in the third quarter of 2014 — and net income of $79 million. Amazon pleasantly surprised investors last quarter with operating income of $464 million. (Those gains come even after paying employees higher […]