Here‘s the ‘Amazon Prime Air’ promo (December 2013), in case you missed it.
A skeptical take.
A recent glimpse from Bloomberg’s:
Barring regulatory obstacles, Amazon would face an upfront cost of about $100 million to buy tens of thousands of drones. The company also would see expenses of about $300 million to deploy them to deliver 400 million orders annually, according to the report, which based its findings on existing technology and prices. […] Amazon would need to hire thousands of operators, each capable of monitoring multiple drones simultaneously, to ensure safe takeoffs and landings, according to the study, which included the personnel cost in its calculations. Most of the drone flight would be automated, according to the study, which assumes each package weighs as much as 5 pounds and each delivery is no more than 10 miles.