Since its probably economically profitable for you, will you keep a updated "list" for the ones that do purchase the script from you? I would think that you probably would since you would be gaining more in the long run this way I would think.
at this point i dont know if there is even interest in something like this and if it really is scaleable (like if 100 people do this, will the list be suddenly only 100 working faucets be left?)
But yeah i am thinking about some automatically syncing solutions for the lists, and for sure anybody who would buy it would get any updates as long as they exist.
But i guess at first hopefully a few people will try it, point out their opinions and look at enough data to figure out if this is even worth it