Tangential to my original question, but as I was trying to track down the article I remembered, I re-discovered Paul Krugman's Theory of Interstellar Trade[1],

Tangential to my original question, but as I was trying to track down the article I remembered, I re-discovered Paul Krugman's Theory of Interstellar Trade[1], written in 1978 which discusses the economics of shipping goods at near-light speed. [1] http://www.standupeconomist.com/pdf/misc/interstellar.pdf http://www.standupeconomist.com/pdf/misc/interstellar.pdf