The fact that one kid got a macbook pro's worth of money by selling a kidney by not being cautious (he was surely not aware of the consequences on his future life) doesn't mean that there will be an epidemic of kids with the guts or lack of wisdom to do something like this. A good thing, no doubt.

I struggle to see a great incentive with I put $3k on a scale vs health issues, a major surgery, etc. I like to think kids are generally smarter than this one was.