The reverse can also be true. For example, Dead Space on Steam costs $20 for Americans and €10 for Europeans. In those cases, I would suspect that the company in question is either happy with the product's sales in one region, or that retail distribution deals might prevent them from setting a base price lower than a specific amount.
P.S.: I'm still not sure why Dead Space costs €20 on GOG.
Oh crud, I missed last week's sale on that one.
Although I already have them on the console.
Well, at least I managed to snatch the Alien Isolation offer at Humble.
Less than 10 minutes left until the Humble Sale finishes.
PS: And the Humble sale has been extended for four more days with a return of formerly disappeared past deals.
Including Alien Isolation.