[reso]

Over what time period did you get 57 sales? If it was in a month or two, that's still excellent growth starting from zero.

Do you have any insights about the type of people who paid money for it? I would start from that image of your customers, and then think about where you can find more of them.

If you're generating marketing strategy for non-english speakers, I would figure out a particular vertical that you know exactly where to find those customers, and blast the crap out of it.