Hi Wolfgrin, I'm not wholly familiar with the concept, so you gave me something to research!
At the moment I am unsure about how to properly set up community copies, as this is my first time publishing on itch and also just in general, but I would encourage anyone who, for whatever reason, can't afford a copy but would still like one, to message me and I can see about getting them a copy on the house!
Thanks for the question.