@Ronald - the phrase "Westerners", believe it or not, doesn't mean just the US, "the West" is a generic term referring to the Western world, or Western culture or civilization, comprising of of Europe, the Americas (North and South America), Israel, Australia, New Zealand and, perhaps surprisingly, Japan, Singapore, Taiwan, and South Korea.

So, unless AEC has been a massive hit in Africa, China, Russia, India and South East Asia, it is probably fair to say that it's market, like that of most paid software, is overwhelming centered on the Western world.

Even if you take a US-centric view (and, having lived in the US, I understand how unaware Americans can be of the rest of the world), I believe that pricing downwards disproportionately expands the number of potential customers, even within America, who decide to go ahead and click Buy.