World Gas Prices
Here's a CNN page that shows the price of a gallon of gas (I believe that's the unit of measurement) in various countries in May, 2004. Gas cost over $5 a gallon in the UK but in Venezuela it only cost $0.14. Um, that ain't marginal cost pricing. In Russia, a gallon of gas cost $1.45.
What does gas cost in Minnesota? See here. It was $1.82 a gallon this morning at the Casey's down the road from my house. Are you not from Minnesota, try Gasbuddy.com .
Thanks to Tyler Cowen at Marginal Revolution for the link to the CNN page.