Arbitrage
You’ve probably noticed how weak the US dollar is lately. Try this on for size.
At an Apple store in the USA, the top-spec Macbook Air costs USD 3,098.
In Australia, it costs AUD 4,338 (USD 4,056). A roundtrip to Honolulu on Jetstar (if you can handle Jetstar economy class) will set you back about AUD 920.
In Britain it costs GBP 2,028 (USD 4,045), and a round-trip to JFK costs as little as GBP 215.