The video games industry is thriving across the world, but for reasons that a lot of people don’t quite understand, video games themselves vary in prices from country to country, with some countries charging up to three times as much as other places.

Take Australia; video games of all kinds in Australia are notorious for their expense especially when considered with prices in the US. For example, a Mario Bros. DS game that’s been out for a while can be bought in the US for $25,...