I began my education at a Tennessee Community College in the fall of 1980. As I recall my tuition was around $120/quarter for a full load, and my books were about that much again. Paid for with a night job in a local grocery store.
As a generality I think it's likely a mistake to offer post-high-school education "for free", since it's not free until the professors, secretaries, coaches, maintenance crews, etc all volunteer 100% of their time, the utilities are all donated, the land is free, etc. But the incremental burden of providing Community College free-of-additional-charge for older people seems pretty minimal. The retired folks in my classes offered some good perspective that the profs couldn't match and in so doing, in my opinion, earned their seats. One man I met had flown B-29s off Guam, and coincidentally later went on to work with my father in one of the larger local manufacturing sites.