I think this all is assuming that those who have the power to will allow competition to ramp up and the price to come down. I can't help but feel they won't with the cure for aging, as it's in a different category than other medical and technological inventions.

As I said in a reply to a sister comment, maybe I'm just cynical and pessimistic, but this is the one thing I don't see those who have money and power allowing to ever reach those who don't; if nobody had to age, it might threaten their power too much.