Amazon Prime same-day delivery is now free in 14 cities

Amazon can get you a package in an hour, but if you "only" need it the same day, delivery is now free in 14 metropolitan areas. To get the service, you'll need to place an order of $35 or more and be an Amazon Prime subscriber at $99 per year. You'll also need to be in specific urban centers, including San Francisco, New York City, Los Angeles, Boston and Seattle/Tacoma (check your zip code here). The move is yet another carrot for Prime subscribers and probably a blow to brick-and-mortar stores, who now rely a lot on impatient shoppers.