So, you already know that there's variance in gas prices between Canada and the US, even by province and state. Local market conditions like size of market, processing and distribution costs, overall demand and competitive price play a large role. Looking outside of North America is an interesting exercise, and one that works well visually. Here's a cool map that shows gas prices across the world.
For further reading, here's a link that compares individual countries more closely: www.kiplinger.com: Gas prices around the world
- Erin F.