For the sale of human organs for transplants should be handles by the individual and not the state. This will cost less for the people who do not need an organ transplant because they will not have to pay the taxes. If someone really needs an organ, they need to be able to come up with the funds.
The individual, often through paying for health care and out of pocket costs is responsible for purchasing an organ. There are no fund a kidney programs run by the government and they don't have a grant you can get to own a new lung. The individual gets on the transplant list and waits for an available donor then pays for the surgery and everything it entails, including the parts.
Individuals should be the ones to decide whether or not to sell their own organs. The government policy of preventing the practice leaves millions of people in need of organs from a donation list, and prevents those willing to sell their organs from being autonomous masters of their own body, and that policy is immoral.
The pro-choice movement walks around saying, "My body my choice." Why isn't it the same when it comes to organ donation and purchasing? People are dying while they are waiting for organ transplants. If people were able to purchase their own kidney it would get rid of the slow government process and expedite things. If your life is hanging by a thread you are going to have more motivation to get things moving than the government.
The job of matching organ donors in enormous! Blood types, family histories, and a whole host of other factors make rejections a very serious business. The key word in getting organs is also, donation. The organs are "free" to begin with. Yes, there is some costs involved in extraction, but when it comes to the cost of human life, and the fact that organs, in general, only come in as people die, it is in everyone's best interest for the system that is in place to remain. If it's ain't broke, don't fix it!
The individual, nor the state are responsible for purchasing organs. It is illegal to buy and sell organs, pretty much across the world. Organs, from donors, are used throughout the medical system and distributed based on need. It has nothing to do with money or financing, it has to do with patients and their needs.
Organ purchasing and markets for organs shouldn't be the sole responsibility of the state - but also shouldn't be the government's domains solely. There is no reason why both public and private organizations shouldn't deal with organ purchasing and organ markets, but only being able to pay out of pocket is not the best solution.
Encouragement of organ individual organ purchases would breed an underground black in which people may be harmed for their organs. Currently, organs are donated and harvested by authorized organ banks to be given to people on donor lists. Additionally, not all organs are viable for transplant. Without proper certification of viability, people may begin buying and selling bad organs.