Big Mac Index

TheEconomist has used McDonalds most famous product to compile a "BigMacIndex" of international purchasing power. http://www.economist.com/

Since introduced, this index has often given good forewarning of over-/undervalued currencies, especially in "developed" countries.

Additionally, I've found through my sundry travels around the world that the price of a value meal at McDonalds is a great cost-of-living indicator for that country. To wit: In England, a value meal costs approximately 4 times what it costs in Canada.

CategoryEconomics