I was thinking about if I became paralyzed from the waist down, and was wondering about this myself, and then wondered what other people would think.
Lets say you have some accident and become fully paralyzed from the waist down, no hope of a natural or therapy assisted recovery. Now the medical field comes up with some device that can bridge over the break in your spine or something, which would enable you to move and feel your legs again as normal. Assuming a 100% success rate, how much would this operation need to cost before it would no longer be worth it to you?