Really? Charging $60 for Jump Point Search? I'm almost inclined to copy the API and implement it for free just out of spite.
However, charging for this particular item is weird, because people who would use this library can figure out how this feature isn't anything hard.
Something more interesting could be eg to offload the heaviest computations to the clouds.
But then you see it also includes developer support and such so it all makes sense.
However this does lead to an interesting concern, what's the difference? I don't seem to see anywhere were it says you can't use the free version for commercial? Or what you get for free and what costs $60?