"I'm here for food" increases your starting weight a little bit. If I remember correctly, it means you can start seeing higher weight variants of scenes a few days earlier than the other choices.
The finished game will be sold both here on Itch and on Steam. I'm uncomfortable pricing it before it's in a state I'm happy with, since there's still something like 9 months of development required to get everything finished and up to a decent level of quality.
