NO.
Human body parts and organs should be donated only.
IMHO poor fellows that are in a waiting list for an organ transplantation must have a chance to survive.
EDIT: Also to stop this kind of sell activities that promote criminality, like kidnapping of inocent people that they will be killed in order to sell their organs in black market, a patient that needs an organ transplantation should not try to buy one. By buying an organ to save your life you condemn another innocent person to death. The selling or buying of organs is immoral, doesn't promote the spirit of humanity and is illegal in many countries.
Hypothetical situation.
Your wife or your child needs a vital organ replacement and has been given 24hrs to live. With a donation only system there would be less chance of a matching replacement being found within the timeframe.
Now I find the whole organ harvesting thing as ghoulish as anyone but when it comes to my family I can't be a saint. We all want life. 😇
How would you feel if someone kidnapped your child or wife and after slaughter sold their organs piece by piece for profit and you never find a trace of the corpse of your beloved one?
Also many times the black market dealers to overcome the morale objections of the patient present to him a fake story like "Samuel" and sell to him the organs of a killed innocent victim instead.
If all of us become organ donors and no patient agrees to buy one, the black market will disappear and the timeframe for a transplantation would be very good.
EDIT: Also i don't want to strengthen the accusation that the bitcoin is a means to support illegal activities.