Tokyo
Lee goes to a coffee shop I like. He
makes his living with language arbitrage. A good enough living to
take three-month vacations.
Lee reads Japanese and buys and sells stamps on the Japanese Yahoo auction site. He does arbitrage between Yahoo Japan and eBay US. He knows the stamp market well. When the price differential is great enough between the Japanese language and the English language markets, he buys and sells. Stamps are low cost to ship, which is helpful; the Yen fluctuates relative to the dollar and right now Lee almost has the arbitrage market to himself.
If you know two languages well and you are an expert in some collectors' field, shouldn't you be doing language arbitrage?