So, I’ll bite, in order to sate my own interest here. Are you saying this because you played the game and found it lacking or is it just because you think it is too expensive? If you have played the game I’d be curious to know what version you played and what you thought was missing.
Outside of that, I feel that 15 USD is pretty standard for many indie games. Given that people tell me that they get anywhere from 20 to 40 hours out of it in its current early access state I think the price is justified myself.