OK so I've play though the whole demo and It was great I wonna pay for the full version but im just curious on how much more content ill get for paying, obviously you get the ending but just wondering, didn't wonna pay $$ for like 20 extra minutes of content if you know what mean 

But anyway great game 

On GoG it says it can be beaten in 10 hours (main quest) or 17,5 hours (Main + side missions).