Back about twenty years ago, I had a friend from being on a condo board who was dying of Leukemia. She and her late husband had owned farm land that was sold to developers. Money was not a significant constraint on her medical care. Every couple weeks she would go get some more blood in order to stay alive.
Olympic™ athletes are banned from getting blood transfusions as they can provide a temporary boost in performance by adding red blood cells that improves the oxygen carrying capacity and offset anemia.