It's still worth it when you're outside the US and want to get certain books that aren't published in your country or aren't imported in their original language

It's still worth it when you're outside the US and want to get certain books that aren't published in your country or aren't imported in their original language. Then you save some money on shipping and a lot of time (the cheapest shipping takes almost a month to certain parts of the world). But yeah, ~$13 for an ebook is outrageous.