Shame on those saying they'd sell their family off over such little things as annoying you. Honestly.
I know this sounds odd, but now that you bring up "single person", I would. That would be my grandmother on my mother's side.
She's a sexist, racist monster, picking fights and favourites for no other reason except to instigate a commotion, psychologically abusing my mother through childhood, even into adulthood, and having the nerve to try to tear my mother and father apart, despite the two truely being a match made in heaven (I have yet to meet a couple that treats eachother with as much respect as my parents do). I would gladly see that piece of manure as a tortured sex slave.
If I had to sell anyone else... there'd have to be a real good benefit for the rest of our family for me to accept that. And if it were to happen to anyone except for my Grandmother, I honestly would not be able to handle it. Even though I didn't know her well, when my Auntie died, I felt terrible for weeks - the thought of my family being seperated by my own choice is just awful.