The game is worth money! Totally worth the $2 that Itch puts in the field by default.
Look at what the competition charges. “An Ace in Space” has the about the same level of quality to your game and lasts about as long. It has a base price of $7. It isn’t a high price. It’s an appropriate price. You should charge more.
Plus: This isn’t a Game Jam level of quality. Free games on Itch can easily be confused for quick, lower quality games.
It’s a beautiful game with a cute story. I enjoyed playing. As a player, if I liked the game it is better for you to get paid so that you can keep making games.