I love this game cuz at least the creator is a Communist to the players unlike other games
I believe that when the game is complete, you will have to pay around $8 USD/1000 yen for the game full game, but Mofu has stated in the past they'd also like to offer/ look into a free version, which may just be the game with reduced content.
Mofu-san is also open to suggestion/feedback from the players as long as they are within reason/doable.