Reality. For example, in 2009, the case of "black transplants" thundered in Ukraine, the kidney was bought for 2-2.5 thousand dollars. the donor was taken abroad, the kidney was removed, it was transplanted to the one who bought it, the donor was returned with the money. in 2010 it got to the point that a ban was imposed on kidney transplantation
This is a myth. As you correctly pointed out, this is a complex operation that requires careful preparation. There is a queue of recipients, i.e. people in need of a transplant. They take a huge number of tests, starting with the blood group and ending with the HLA histocompatibility system. Successful transplantation is possible only with a certain percentage of coincidence of the parameters between the donor and the recipient. In addition, not a single surgeon will undergo an illegal transplant, as this will entail the revocation of the certificate and criminal liability.