Last year a team at Harvard successfully rolled back the age in organs in mice. He can now roll the age forward or backward in a cell and is testing on other animals.

I think the humor really reflects the views of the time and maybe doesn't completely translate to younger readers.

When I started reading sci-fi in the early 80s, the thinner mass market books were 1.99 to 2.99.

Inflation since then has just about tripled, which puts mass markets at about 9.99 if they were following inflation. It's possible they've actually come down in price a tiny bit once inflation is accounted for.

Obviously, but unless I misunderstood, your premise is that these things have been solved.

Difficulty and uncertainty has never stopped humans before.