U3A cost do vary - I belong to three, annual charges vary between £8 and £20, and individual groups can be between zero and £20ish per quarter. The cost of individual groups depends on where they meet, a home or a hall (which has to be paid for). Regardless, the costs are quite low and very worthwhile.
I prefer to keep the groups i run small so that we can meet in homes and not have any extra costs, it is also more friendly with a small group.
Adult offspring harbouring resentments
Wrong side driving social media stunt




and suddenly something from way back occurs to me, there's usually someone here who knows exactly what I'm talking about. 

