[toomuchtodo]

The problem isn't the arbitrage (which is a core component of capitalism and profit [1]) these people are utilizing, its Amazon's draconian policy towards sellers.

[1] Hat tip to patio11: https://news.ycombinator.com/item?id=9087930

> They're likely using one of the world's oldest business models: "Buy things for $1, sell them for $2."