Hello, there! The full game will most likely cost 12 USD.
As for the time of release in 2027, I'm sorry, but I can't really give you a specific month. Making games takes quite a lot of time and there can always be unexpected things that happen. I don't want to say a specific month/date and then have to change it if there happen to be delays; not to mention I'm funding the whole project by myself and a bit of help from donations here and there, so there could also be delays because of the need to save money to commission more artwork or other things for the game.