This link popped up a few times on my feed and I thought it was interesting "research" material:

www.ranker.com /list/black-market-organ-cost/april-a-taylor

Kidneys $200,000

Kidneys are by far the most popular organ on the Black Market. In fact, a staggering 75% of the Black Market organ trade involves the sale of kidneys. Therefore, it's not surprising that they're also one of the most expensive things to illegally purchase. At approximately $200,000, most people who need a kidney transplant due to medical issues such as high blood pressure and diabetes won't be able to afford it.

Sadly, less than a third of US patients on the kidney waitlist will get a legal opportunity to save their lives. Something worth noting is that the cost of these organs is much lower in China and India, where they range from $15,000 to $62,000.