Take a look at this tiny little device called a wound VAC, short for vacuum assisted closure. It is a portable sucking device that keeps open wounds clean and helps them heal. I saw this one sitting on the counter top the other day in front of a patient room. Here's a video of some guy changing out his V.A.C. dressing.
Guess how much these cost retail, should you wish to purchase them outright? A couple thousand? Five grand? Ten grand? How about fifteen grand? Let's try Twenty grand? Nope. I was told for me to buy them outright is thirty thousand dollars. Thirty grand for a LCD screen and some surgical steel, surrounded by a power supply. I suspect parts and manufacturing would run you about $300. Legal costs about $29,700. Although I find this cost higher than even I would expect.