According to Wikipedia on this very question, the American publisher (Scholastic) felt that it would be easier to market Sorcerer! Who would want to read about a Philosopher's stone?!? Despite the fact that Rowling was not keen on this idea, the decision was still made and sales soared. We will never know if the series would be as much of a success if they had stuck with the original title or not. At this point in time, I also have to wonder if it matters. It's like playing the "what-if" game! The fact still remains, however, that the original title was there for a reason . . . one that I discovered even more so this past year while hosting Fairy Tale Fridays, particularly the week we examined The Philosopher's Stone!
However, it does get me to thinking . . . how often is a name changed for marketing purposes? We all are aware of the controversies surrounding cover art for the purposes of marketing, but what about titles as well, especially those that may have more of an underlying meaning?
Do any other titles come to mind you are aware that have been changed based on publication location? What are your thoughts on a name change?