XDA rules state if you offer something on XDA that is paid, there must be a free version available as well. It must have similar functionality to the paid version. To that end I'd suggest one of two things. Either open a thread in the themes and apps section that would offer a free version with a donate option etc. The free version could offer similar functionality as the paid version. If there is no free version available, this thread would have to be closed.
I'd say keep the thread open since it's not mine. However, I won't discuss my module here anymore.