From the comments

From FC:

A knocking at the door.

“Who’s there?” I asked. “Amazon drone,” came a polite but firm bass voice.

I opened the door to find box on the step as the hexacopter retracted its delivery arm and spun up its rotors. An invoice icon appeared on my Amazon eyeglasses. What wonders had I been brought today and how much would they cost?

But then, I thought, which of the two of us was truly an Amazon drone?