Thats what I already did!
But if people bought the game on itch.io before the walkthrough went up, itch.io asks them for an additional 30USD instead of just 5! 😩
When you have just the demos and they are free its easy to put extra content for 5 dollars, but when you have the full game it wont allow you to set anything with a price under the full price of the game 😤