Yes, the game itself will be free, but you will be able to buy a version with everything already unlocked for $5, if you wish to do so, and by everything unlocked I mean all endings gotten and the mode you get for doing so.
i personally also think that it's not fun to just pay to have everything completed for you, but i know a market exists and i need to pay bills somehow, so making the game itself free, but having a already complete save file available for $5, seems like the best middleground of making money without being predatory