The Undercover Economist: Exposing Why the Rich Are Rich, Why the Poor Are Poor--And Why You Can Never Buy a Decent Used Car!
Tim Harford
Another fun romp through the surprisingly fascinating world of economics.
David Ricardo was a wealthy stockbroker and member of Parliament in the 1800s who studied the dynamics of land prices during the Napoleonic wars.
Even a single extra person worth of demand can tip the whole pricing structure of a market. This applies as much to 19th century farmland as it does to 21st century coffee bars.