>>Cost to fund a entire study with ever-so-slightly nonrandom treatment group ? Or cost to tune your own system to the cancer types found [perhaps varying with cancer type?]
Custom creation of a "kick me" sign that sticks mostly to ugly stuff sticking out of your cancer cells. I don't know all the details. Buffett had a non-aggressive tumor that won't have the wild abnormalities they need to look for to avoid scorched earth. But automation will come, quality will rise sharply and the cost will plummet.
FWIW, some clinicians would say Buffett didn't need treatment unless he plans to live to 100 and even then there will be better treatments around the corner.
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1
