[huhtenberg]

$19 is for a license that allows playing with the library, but not publishing the app. A preview license if you will, just to let people see if your stuff is what they actually need.

> If you can buy a well-tested off the shelf solution for this money, why not do that instead?

Sure, but who is to say that it is well-tested? That's exactly what the preview license is for. But all in all, gotta tell you that you have a tough task in front of you. What do you think the size of your target market? I am going to guess that it is quite limited (in fact, you said it yourself), so your best bet here is to try and land a sale to a very large developer or into a massively popular app. In either case you need tiered pricing to fully utilize the opportunity. Think about it. Been there myself a few years ago trying to sell sophisticated networking libraries (that is a much larger niche than yours) and it is tough, really tough.