Hello, atsunaa104, and thank you for your interest.
I am sorry that $16 is a lot for you. Unfortunately, I am no artist and though I can work for free the others who contribute need to be paid for their services.
However, when it gets closer to the release date, I will be asking for playtesters and offering a copy of the full finished game as payment, so you could apply for that when the time comes. ^_^