The Last Days of Friendship Valley is like Disco Elysium if instead of being an alcoholic you had undiagnosed autism

The Last Days of Friendship Valley is like Disco Elysium if instead of being an alcoholic you had undiagnosed autism
How do I preorder. I keep pressing money against the screen, but nothing's happening!!
The true disco elysium were the friends we made along the way (and also this gun we found)