Azurewraith
Explorer
Some (very few) people can sell hair to make wigs. Blood donation isn't compensated, though you CAN be compensated for donating plasma...up to 2x per week for about $30. You can't sell most organs. Not legally, at least.
Feces, however, can be donated for the treatment of certain diseases (like C. difficile infections) for up to $13,000/year. However, the donors have to be so healthy, only 4% pass the screening process.
Sooo, overall, not exactly a solid basis for a stable trade system.
Better go make me a wheat grass smoothie and possibly go do some form of yoga