Novel that features the ultra wealthy able to buy body parts of poor for self enhancement

Question

I read a book years ago 1980's or 90's possibly but the book may have been older where the ultra rich were able to buy or exchange the body parts of other people to enhance themselves. Not necessarily or just organs but muscular arms if theirs were week or flabby, stronger legs, etc. there is more to the story that is the only key component that I can remember.

One of the key components was that society in general could change parts, not just organs, with other citizens. It was something the rich could afford and that usually the poor ended up being the donors. It worked like an exchange, your week arms for some mill workers strong ones, etc.

Answer 1

If the people having parts removed are in a government mental asylum, and the protagonist is a psychologist there, it might be John Boyd's The Organ Bank Farm.

The plot involves a plague that has killed a substantial amount of the populace, where it seems survival is more likely for the very intelligent or the mentally incompetent. The protagonist is brought on to try to rehabilitate a group of children and he quickly learns that the site is being used to harvest body parts, the residents being considered property of the State, with the ultimate goal being brain transplants. His motivation is that, if he can make the brain transplants viable, these children won't be harvested.

It is a weird book, full of sex and violence, and my impression rereading it was that the survivors were universally mentally ill, the "non-crazy" ones being degrees of psychopaths, mistaken first cold intelligence.

If so, it was provided as an answer to my question, Short story about a psychologist with a punishment/reward machine learning you need punishment to reform malcontents