Yes, there is a fee. You can check different prices on our Patron page: https://www.patreon.com/c/gamingtalesstudio for different versions. Thank you for playing and asking about new versions.
once you become a patron depending on your tier you will get monthly updates, but you do not need to pay additional money for those, just the monthly fee and you'll have direct access to the latest versions. I recommend to buy once the lowest tier and try the system. It differs from other andif you like it you can upgrade your membership 👍